Following are circles of latitude between the 15th parallel south and the 20th parallel south:

16th parallel south

The 16th parallel south is a circle of latitude that is 16 degrees south of the Earth's equatorial plane. It crosses the Atlantic Ocean, Africa, the Indian Ocean, Australasia, the Pacific Ocean and South America.

A section of the border between Mozambique and Zimbabwe is defined by the parallel.

Around the world Starting at the Prime Meridian and heading eastwards, the parallel 16° south passes through:

{| class="wikitable plainrowheaders" ! scope="col" width="125" | Coordinates ! scope="col" | Country, territory or sea ! scope="col" | Notes |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Atlantic Ocean | style="background:#b0e0e6;" |

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! scope="row" | / border

! scope="row" | | For about 20 km

! scope="row" | | For about 9 km

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| style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Indian Ocean | style="background:#b0e0e6;" | Mozambique Channel

! scope="row" | | |-valign="top" | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Indian Ocean | style="background:#b0e0e6;" | Passing just south of Tromelin Island, Passing just north of Albatross Island, |-valign="top" | ! scope="row" | | Western Australia Northern Territory |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Indian Ocean | style="background:#b0e0e6;" | Gulf of Carpentaria

! scope="row" | | Queensland |-valign="top" | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Pacific Ocean | style="background:#b0e0e6;" | Passing through the Coral Sea Islands Territory,

! scope="row" | | Island of Malakula |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Pacific Ocean | style="background:#b0e0e6;" | Coral Sea

! scope="row" | | Pentecost Island |-valign="top" | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Pacific Ocean | style="background:#b0e0e6;" | Passing just north of Vanua Levu island, Passing just north of Qelelevu island, Passing just south of Niuatoputapu island, Passing just south of Motu One atoll, Passing just north of Tupai atoll, Passing just south of Makatea atoll, Passing just south of Kaukura atoll, Passing just north of Niau atoll,

! scope="row" | | Passing through Toau atoll |-valign="top" | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Pacific Ocean | style="background:#b0e0e6;" | Passing just north of Fakarava atoll, Passing just south of Kauehi atoll, Passing just north of Raraka atoll,

! scope="row" | | Passing through Raroia atoll |-valign="top" | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Pacific Ocean | style="background:#b0e0e6;" | Passing just south of Takume atoll, Passing just south of Fangatau atoll,

! scope="row" | | Passing through Fakahina atoll |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Pacific Ocean | style="background:#b0e0e6;" |

! scope="row" | | The border with Bolivia is in Lake Titicaca

! scope="row" | | |-valign="top" | ! scope="row" | | Mato Grosso Goiás Federal District - passing just south of Brasília Goiás - for about 18 km Minas Gerais Bahia |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Atlantic Ocean | style="background:#b0e0e6;" | |-valign="top" | ! scope="row" | | Island of Saint Helena |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Atlantic Ocean | style="background:#b0e0e6;" |

17th parallel south

The 17th parallel south is a circle of latitude that is 17 degrees south of the Earth's equatorial plane. It crosses the Atlantic Ocean, Africa, the Indian Ocean, Australasia, the Pacific Ocean and South America.

Around the world Starting at the Prime Meridian and heading eastwards, the parallel 17° south passes through:

{| class="wikitable plainrowheaders" ! scope="col" width="125" | Coordinates ! scope="col" | Country, territory or ocean ! scope="col" | Notes |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Atlantic Ocean | style="background:#b0e0e6;" |

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! scope="row" | | The border with Zimbabwe is in Lake Kariba

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! scope="row" | | |-valign="top" | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Indian Ocean | style="background:#b0e0e6;" | Mozambique Channel - passing just north of Juan de Nova Island,

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| style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Indian Ocean | style="background:#b0e0e6;" |

! scope="row" | | Île Sainte-Marie |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Indian Ocean | style="background:#b0e0e6;" | Passing just south of Coco Island,

! scope="row" | | Western Australia |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Indian Ocean | style="background:#b0e0e6;" | King Sound |-valign="top" | ! scope="row" | | Western Australia Northern Territory Queensland - mainland and Wellesley Islands |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Indian Ocean | style="background:#b0e0e6;" | Gulf of Carpentaria

! scope="row" | | Queensland - Horseshoe Island |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Indian Ocean | style="background:#b0e0e6;" | Gulf of Carpentaria

! scope="row" | | Queensland - Bentnick Island |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Indian Ocean | style="background:#b0e0e6;" | Gulf of Carpentaria

! scope="row" | | Queensland |-valign="top" | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Pacific Ocean | style="background:#b0e0e6;" | Passing through the Coral Sea Islands Territory,

! scope="row" | | Island of Tongariki |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Pacific Ocean | style="background:#b0e0e6;" |

! scope="row" | | Yasawa Islands |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Pacific Ocean | style="background:#b0e0e6;" | Bligh Water

! scope="row" | | Vanua Levu island |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Pacific Ocean | style="background:#b0e0e6;" | Koro Sea

! scope="row" | | Taveuni island |-valign="top" | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Pacific Ocean | style="background:#b0e0e6;" | Passing just north of the Lau Islands, Passing just south of Maupihaa atoll, Passing just south of Raiatea island, Passing just south of Huahine island,

! scope="row" | | Tetiaroa atoll |-valign="top" | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Pacific Ocean | style="background:#b0e0e6;" | Passing just south of Tahanea atoll, Passing just north of Motutunga atoll, Passing just south of Tepoto atoll, |-valign="top" | ! scope="row" | | Marutea atoll |-valign="top" | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Pacific Ocean | style="background:#b0e0e6;" | Passing just south of Rekareka atoll,

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! scope="row" | | |-valign="top" | ! scope="row" | | Mato Grosso Goiás - passing just south of Goiânia Minas Gerais Bahia |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Atlantic Ocean | style="background:#b0e0e6;" |

18th parallel south

The 18th parallel south is a circle of latitude that is 18 degrees south of the Earth's equatorial plane. It crosses the Atlantic Ocean, Africa, the Indian Ocean, Australasia, the Pacific Ocean and South America.

Around the world Starting at the Prime Meridian and heading eastwards, the parallel 18° south passes through:

{| class="wikitable plainrowheaders" ! scope="col" width="125" | Coordinates ! scope="col" | Country, territory or ocean ! scope="col" | Notes |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Atlantic Ocean | style="background:#b0e0e6;" |

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! scope="row" | | Caprivi Strip

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! scope="row" | | Caprivi Strip

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! scope="row" | | Caprivi Strip

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! scope="row" | | For about 3 km

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! scope="row" | | Passing just south of Harare

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| style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Indian Ocean | style="background:#b0e0e6;" | Mozambique Channel

! scope="row" |

| style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Indian Ocean | style="background:#b0e0e6;" |

! scope="row" | | Western Australia |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Indian Ocean | style="background:#b0e0e6;" | Roebuck Bay - passing just south of Broome, Western Australia |-valign="top" | ! scope="row" | | Western Australia Northern Territory Queensland |-valign="top" | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Pacific Ocean | style="background:#b0e0e6;" | Passing through 's Coral Sea Islands Territory Passing just south of Efate island, |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Pacific Ocean | style="background:#b0e0e6;" |

! scope="row" | | Island of Viti Levu |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Pacific Ocean | style="background:#b0e0e6;" | Koro Sea

! scope="row" | | Island of Gau |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Pacific Ocean | style="background:#b0e0e6;" | Koro Sea

! scope="row" | | Island of Nayau |-valign="top" | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Pacific Ocean | style="background:#b0e0e6;" | Passing just north of Fonualei, Passing just north of Palmerston Island, Passing just south of the islands of Tahiti, Mehetia and Reitoru,

! scope="row" | | Marokau atoll |-valign="top" | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Pacific Ocean | style="background:#b0e0e6;" | Passing between the atolls of Hao and Amanu,

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! scope="row" | | |-valign="top" | ! scope="row" | | Mato Grosso do Sul Mato Grosso - for about 11 km Mato Grosso do Sul - for about 9 km Mato Grosso - for about 16 km Mato Grosso do Sul - for about 22 km Mato Grosso - for about 18 km Goiás Minas Gerais Espírito Santo Bahia |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Atlantic Ocean | style="background:#b0e0e6;" |

19th parallel south

The 19th parallel south is a circle of latitude that is 19 degrees south of the Earth's equatorial plane. It crosses the Atlantic Ocean, Africa, the Indian Ocean, Australasia, the Pacific Ocean and South America.

Around the world Starting at the Prime Meridian and heading eastwards, the parallel 19° south passes through:

{| class="wikitable plainrowheaders" ! scope="col" width="125" | Coordinates ! scope="col" | Country, territory or sea ! scope="col" | Notes |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Atlantic Ocean | style="background:#b0e0e6;" |

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| style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Indian Ocean | style="background:#b0e0e6;" | Mozambique Channel

! scope="row" | | Passing just south of Antananarivo |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Indian Ocean