3 derajat lintang selatan adalah sebuah lingkaran lintang, yakni 3 derajat di selatan khatulistiwa bumi. Ia melewati Samudra Atlantik, Afrika, Samudra Hindia, Asia Tenggara, Australasia, Samudra Pasifik, dan Amerika Selatan.

Dimulai dari meridian utama dan bergerak ke arah timur, 3 derajat lintang selatan melewati:

{| class="wikitable plainrowheaders"
! scope="col" width="125" | Koordinat
! scope="col" | Negara, wilayah, atau laut
! scope="col" | Keterangan
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Samudra Atlantik
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
|
|-
| 
! scope="row" | 
|
|-valign="top"
| 
! scope="row" | 
|
|-
| 
! scope="row" | 
|
|-
| 
! scope="row" | 
|
|-
| 
! scope="row" | 
|
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Samudra Hindia
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| Pulau Pagai Selatan
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Selat Mentawai
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| Pulau Sumatra
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Selat Bangka
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| Pulau Bangka dan Pulau Lepar
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Laut Jawa
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| Pulau Belitung
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Laut Jawa
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| Island of Borneo
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Laut Jawa
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| Pulau Kalimantan
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Selat Makassar
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| Island of Sulawesi (Semenanjung Selatan)
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Teluk Bone
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| Pulau Sulawesi (Semenanjung Tenggara)
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Banda Sea
| style="background:#b0e0e6;" | Melewati utara Pulau Buru, 
|-
| 
! scope="row" | 
| Kepulauan Boano dan Seram
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Laut Seram
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| Pulau Papua
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Teluk Cenderawasih
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| Pulau Papua Nugini
|-
| 
! scope="row" | 
| Pulau Papua
|-valign="top"
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Samudra Pasifik
| style="background:#b0e0e6;" | Laut Bismarck, melewati selatan Kepulauan Purdy,  melewati selatan Pulau Dyaul, 
|-
| 
! scope="row" | 
| Pulau New Ireland
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Samudra Pasifik
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| Kelompok Pulau Tabar
|-valign="top"
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Samudra Pasifik
| style="background:#b0e0e6;" | Melewati Kelompok Pulau Tabar, Melewati Pulau Nuguria,  Melewati selatan Pulau Kanton, Melewati utara Pulau Enderbury, 
|-
| 
! scope="row" | 
| Pulau Puná
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Samudra Pasifik
| style="background:#b0e0e6;" | Terusan Jambelí
|-
| 
! scope="row" | 
|
|-
| 
! scope="row" | 
|
|-
| 
! scope="row" | 
|
|-valign="top"
| 
! scope="row" | 
| Amazonas Pará Maranhão Piauí Ceará
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Samudra Atlantik
| style="background:#b0e0e6;" |
|-
|}

Lihat pula 
 2 derajat lintang selatan
 4 derajat lintang selatan

s03