The 4th parallel south is a circle of latitude that is 4 degrees south of the Earth's equatorial plane. It crosses the Atlantic Ocean, Africa, the Indian Ocean, Southeast Asia, Australasia, the Pacific Ocean and South America.

Around the world

Starting at the Prime Meridian and heading eastwards, the parallel 4° south passes through: ! scope="col" | Coordinates ! scope="col" | Country, territory or sea ! scope="col" | Notes ! scope="row" style="background:#b0e0e6;" | Atlantic Ocean ! scope="row" | 🇨🇬 ! scope="row" | 🇨🇩 ! scope="row" style="background:#b0e0e6;" | Lake Tanganyika ! scope="row" | 🇧🇮 ! scope="row" | 🇹🇿 ! scope="row" | 🇰🇪 ! scope="row" style="background:#b0e0e6;" | Indian Ocean ! scope="row" | 🇮🇩 ! scope="row" style="background:#b0e0e6;" | Java Sea ! scope="row" | 🇮🇩 ! scope="row" style="background:#b0e0e6;" | Java Sea ! scope="row" | 🇮🇩 ! scope="row" style="background:#b0e0e6;" | Makassar Strait ! scope="row" | 🇮🇩 ! scope="row" style="background:#b0e0e6;" | Gulf of Boni ! scope="row" | 🇮🇩 ! scope="row" style="background:#b0e0e6;" | Banda Sea ! scope="row" | 🇮🇩 ! scope="row" style="background:#b0e0e6;" | Banda Sea ! scope="row" | 🇮🇩 ! scope="row" style="background:#b0e0e6;" | Ceram Sea ! scope="row" | 🇮🇩 ! scope="row" style="background:#b0e0e6;" | Arafura Sea ! scope="row" | 🇮🇩 ! scope="row" | 🇵🇬 ! scope="row" style="background:#b0e0e6;" | Pacific Ocean ! scope="row" | 🇵🇬 ! scope="row" style="background:#b0e0e6;" | Pacific Ocean ! scope="row" | 🇵🇬 ! scope="row" style="background:#b0e0e6;" | Pacific Ocean ! scope="row" | 🇰🇮 ! scope="row" style="background:#b0e0e6;" | Pacific Ocean ! scope="row" | 🇵🇪 ! scope="row" | 🇪🇨 ! scope="row" | 🇵🇪 ! scope="row" | 🇪🇨 ! scope="row" | 🇵🇪 ! scope="row" | 🇨🇴 ! scope="row" | 🇧🇷 Pará Maranhão Piauí Ceará - passing just south of Fortaleza ! scope="row" style="background:#b0e0e6;" | Atlantic Ocean