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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SECURITIES AND EXCHANGE COMMISSION</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>WASHINGTON, D.C. 20549</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>___________</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>FORM 8-K</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>CURRENT REPORT</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>PURSUANT TO SECTION 13 OR 15(d) OF THE</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SECURITIES EXCHANGE ACT OF 1934</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Times New Roman, Times, Serif">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 32%; padding-right: 0; padding-left: 0; text-autospace: none; font-size: 10pt">Date of report (Date of earliest event reported) </TD>
    <TD STYLE="width: 28%; border-bottom: black 1pt solid; padding-right: 0; padding-left: 0; text-autospace: none; font-size: 10pt; font-weight: bold; text-align: center"><B>May 14, 2012</B></TD>
    <TD STYLE="width: 40%; padding-right: 0; padding-left: 0">&nbsp;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Times New Roman, Times, Serif">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 100%; border-bottom: black 1pt solid; text-align: center; text-autospace: none; font-size: 10pt; text-transform: uppercase; font-weight: bold; padding-right: 0; padding-left: 0"><FONT STYLE="text-transform: none"><B>VARIAN MEDICAL SYSTEMS, INC.</B></FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0; text-autospace: none; font-size: 10pt; text-align: center">(Exact Name of Registrant as Specified in its Charter)</TD></TR>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 33%; border-bottom: black 1pt solid; padding-right: 0; padding-left: 0; text-autospace: none; font-weight: bold; text-align: center"><B>Delaware</B></TD>
    <TD STYLE="width: 33%; border-bottom: black 1pt solid; padding-right: 0; padding-left: 0; text-autospace: none; font-weight: bold; text-align: center"><B>1-7598</B></TD>
    <TD STYLE="width: 33%; border-bottom: black 1pt solid; padding-right: 0; padding-left: 0; text-autospace: none; font-weight: bold; text-align: center"><B>94-2359345</B></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0; text-autospace: none; text-align: center">(State or Other Jurisdiction <BR>
of Incorporation)</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; text-autospace: none; text-align: center">(Commission File <BR>
Number)</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; text-autospace: none; text-align: center">(IRS Employer<BR>
Identification No.)</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 60%; border-bottom: black 1pt solid; padding-right: 0; padding-left: 0; text-autospace: none; font-weight: bold; text-align: center"><B>3100 Hansen Way, Palo Alto, CA</B></TD>
    <TD STYLE="width: 40%; border-bottom: black 1pt solid; padding-right: 0; padding-left: 0; text-autospace: none; font-weight: bold; text-align: center"><B>94304-1030</B></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0; text-autospace: none; text-align: center">(Address of Principal Executive Offices)</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; text-autospace: none; text-align: center">(Zip Code)</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 37%; padding-right: 0; padding-left: 0; text-autospace: none">Registrant&rsquo;s telephone number, including area code</TD>
    <TD STYLE="width: 26%; border-bottom: black 1pt solid; padding-right: 0; padding-left: 0; text-autospace: none; font-weight: bold; text-align: center"><B>(650) 493-4000</B></TD>
    <TD STYLE="width: 37%; padding-right: 0; padding-left: 0">&nbsp;</TD></TR>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE ALIGN="CENTER" CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 100%; border-bottom: black 1pt solid; padding-right: 0; padding-left: 0; text-autospace: none; font-weight: bold; text-align: center"><B>Not Applicable</B></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0; text-autospace: none; text-align: center">(Former Name or Former Address, if Changed Since Last Report)</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Check the appropriate box below if the Form 8-K filing is intended
to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction
A.2. below):</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Wingdings; color: black">&uml;</FONT>
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Wingdings; color: black">&uml;</FONT>
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Wingdings; color: black">&uml;</FONT>
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Wingdings; color: black">&uml;</FONT>
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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    <TD STYLE="width: 8%; padding-right: 0; font-size: 10pt; font-weight: bold">Item 5.02.</TD>
    <TD STYLE="width: 92%; padding-right: 0; font-size: 10pt; font-weight: bold">Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.</TD></TR>
</TABLE>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.8in">On May 14, 2012, Tai-yun Chen, Corporate
Senior Vice President, Finance and Corporate Controller of Varian Medical Systems, Inc. (the &ldquo;Company&rdquo;) and the Company&rsquo;s
Principal Accounting Officer, informed the Company of her intent to retire as of August&nbsp;10,&nbsp;2012.&nbsp;&nbsp; The Company
is identifying a candidate to replace Ms. Chen.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: left; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: left; margin-bottom: 0pt"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt"><B>SIGNATURES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 40.5pt 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">Pursuant to the requirements of the Securities
Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

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    <TD STYLE="padding-right: 0; padding-left: 0; text-autospace: none; font-weight: bold">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 0; padding-left: 0; tab-stops: .35in right lined 3.4in; text-autospace: none">Varian Medical Systems, Inc.<BR>
<BR STYLE="mso-special-character: line-break">
<BR STYLE="mso-special-character: line-break">
</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0; text-autospace: none; font-weight: bold">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; tab-stops: .35in right lined 3.4in; text-autospace: none">By: </TD>
    <TD COLSPAN="2" STYLE="border-bottom: black 1pt solid; padding-right: 0; padding-left: 0; tab-stops: .35in right lined 3.4in; text-autospace: none">/s/ JOHN W. KUO</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0; text-autospace: none; font-weight: bold">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 0; padding-left: 0; tab-stops: .35in right lined 3.4in; text-autospace: none">Name:</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; tab-stops: .35in right lined 3.4in; text-autospace: none">John W. Kuo</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0; text-autospace: none; font-weight: bold">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 0; padding-left: 0; tab-stops: .35in right lined 3.4in; text-autospace: none">Title:</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; tab-stops: .35in right lined 3.4in; text-autospace: none">Corporate Senior Vice President, General Counsel and Corporate Secretary</TD></TR>
<TR>
    <TD STYLE="width: 53%; padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="width: 3%; padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="width: 3%; padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="width: 41%; padding-right: 0; padding-left: 0">&nbsp;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Dated: May 17, 2012</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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{"company-data": {"conformed-name": "VARIAN MEDICAL SYSTEMS INC", "cik": "0000203527", "assigned-sic": "3845", "irs-number": "942359345", "state-of-incorporation": "DE", "fiscal-year-end": "1001"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "001-07598", "film-number": "12850329"}, "business-address": {"street1": "3100 HANSEN WAY", "city": "PALO ALTO", "state": "CA", "zip": "94304-1000", "phone": "650-424-5834"}, "mail-address": {"street1": "3100 HANSEN WAY", "city": "PALO ALTO", "state": "CA", "zip": "94304-1000"}, "former-company": [{"former-conformed-name": "VARIAN ASSOCIATES INC /DE/", "date-changed": "19920703"}, {"former-conformed-name": "VARIAN DELAWARE INC", "date-changed": "19761123"}]}
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
___________
FORM 8-K
CURRENT REPORT
PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934
Date of report (Date of earliest event reported)
May 14, 2012
VARIAN MEDICAL SYSTEMS, INC.
(Exact Name of Registrant as Specified in its Charter)
Delaware
1-7598
94-2359345
(State or Other Jurisdiction
of Incorporation)
(Commission File
Number)
(IRS Employer
Identification No.)
3100 Hansen Way, Palo Alto, CA
94304-1030
(Address of Principal Executive Offices)
(Zip Code)
Registrant's telephone number, including area code
(650) 493-4000
Not Applicable
(Former Name or Former Address, if Changed Since Last Report)
Check the appropriate box below if the Form 8-K filing is intended
to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction
A.2. below):
¨
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
¨
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
¨
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
¨
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Item 5.02.
Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.
On May 14, 2012, Tai-yun Chen, Corporate
Senior Vice President, Finance and Corporate Controller of Varian Medical Systems, Inc. (the "Company") and the Company's
Principal Accounting Officer, informed the Company of her intent to retire as of August 10, 2012.   The Company
is identifying a candidate to replace Ms. Chen.
SIGNATURES
Pursuant to the requirements of the Securities
Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
Varian Medical Systems, Inc.
By:
/s/ JOHN W. KUO
Name:
John W. Kuo
Title:
Corporate Senior Vice President, General Counsel and Corporate Secretary
Dated: May 17, 2012