| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Sydneium | city | New South Wales | Australia | -33.86 | 151.21 | 0 | 358927 |
| Sydney | city | New South Wales | Australia | -33.86 | 151.21 | 0 | 358927 |
| Sydney | city | Nova Scotia | Canada | 46.15 | -60.17 | 118 | 6081 |
| Sydney | city | British Columbia | Canada | 48.65 | -123.42 | 36 | 24210 |
| Sydney | city | Tafea | Vanuatu | -19.53 | 169.27 | 137 | 1648 |
| Sydney | city | North West | South Africa | -26.22 | 23.12 | 3717 | 0 |
| Sydney | city | Northern Cape | South Africa | -28.58 | 21.18 | 2611 | 8203 |
| Sydney | city | Mpumalanga | South Africa | -25.02 | 28.65 | 3349 | 22755 |
| Sydney | city | Limpopo | South Africa | -23.26 | 28.41 | 3349 | 446 |
| Sydney | city | Florida | United States | 27.96 | -82.21 | 98 | |
| Sydney | city | North Dakota | United States | 46.73 | -98.77 | 1669 | |
| Sydney (Cape Breton Regional Hospital) Heliport | airport | 46.11 | -60.18 | 224 | 0 | ||
| Sydney (historical) | city | Kentucky | United States | 37.62 | -82.36 | 830 | |
| Sydney Adventist Hospital Helipad | airport | -33.73 | 151.10 | 584 | 0 | ||
| Sydney City | city | New South Wales | Australia | -33.86 | 151.21 | 0 | 358927 |
| Sydney Crossings | city | Florida | United States | 27.99 | -82.18 | 108 | |
| Sydney Inlet | city | British Columbia | Canada | 49.37 | -126.25 | 0 | 90 |
| Sydney Mines | city | Nova Scotia | Canada | 46.23 | -60.22 | 0 | 4474 |
| Sydney River | city | Nova Scotia | Canada | 46.12 | -60.22 | 160 | 6081 |
| Sydney Town (historical) | city | California | United States | 37.80 | -122.40 | 55 | |
| Sydney on Vaal | city | Northern Cape | South Africa | -28.44 | 24.32 | 3448 | 10437 |
| Sydney's Hope | city | Eastern Cape | South Africa | -33.40 | 26.22 | 1683 | 289 |
| Sydney’s Hope | city | Eastern Cape | South Africa | -33.40 | 26.22 | 1683 | 289 |
| Sydnor Addition | city | West Virginia | United States | 37.60 | -82.14 | 830 | |
| Sydnorsville | city | Virginia | United States | 36.89 | -79.87 | 1095 |