The 9th parallel south is a circle of latitude that is 9 degrees south of the Earth's equatorial plane. It crosses the Atlantic Ocean, Africa, the Indian Ocean, Australasia, the Pacific Ocean and South America. The parallel passes through 11 out of the 26 states of Brazil.

Around the world

Starting at the Prime Meridian and heading eastwards, the parallel 9° south passes through: ! scope="col" width="125" | 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 Mweru ! scope="row" | 🇿🇲 ! scope="row" | 🇹🇿 ! scope="row" style="background:#b0e0e6;" | Indian Ocean ! scope="row" | 🇮🇩 ! scope="row" style="background:#b0e0e6;" | Indian Ocean ! scope="row" | 🇮🇩 ! scope="row" | {{subst:undefined}} ! scope="row" | 🇮🇩 ! scope="row" | {{subst:undefined}} ! scope="row" style="background:#b0e0e6;" | Timor Sea ! scope="row" style="background:#b0e0e6;" | Arafura Sea ! scope="row" | 🇮🇩 ! scope="row" | 🇵🇬 ! scope="row" style="background:#b0e0e6;" | Coral Sea ! scope="row" | 🇵🇬 ! scope="row" style="background:#b0e0e6;" | Solomon Sea ! scope="row" | 🇵🇬 ! scope="row" style="background:#b0e0e6;" | Solomon Sea ! scope="row" | 🇵🇬 ! scope="row" style="background:#b0e0e6;" | Solomon Sea ! scope="row" | 🇸🇧 ! scope="row" style="background:#b0e0e6;" | New Georgia Sound ! scope="row" | 🇸🇧 ! scope="row" style="background:#b0e0e6;" | Indispensable Strait ! scope="row" | 🇸🇧 ! scope="row" style="background:#b0e0e6;" | Pacific Ocean ! scope="row" | 🇨🇰 ! scope="row" style="background:#b0e0e6;" | Pacific Ocean ! scope="row" | 🇵🇪 ! scope="row" | 🇧🇷 ! scope="row" style="background:#b0e0e6;" | Atlantic Ocean