| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Sint-Jacobs-Kapelle | city | Vlaanderen | Belgium | 51.02 | 2.83 | 9 | 13713 |
| Sint-Jan | city | Vlaanderen | Belgium | 50.93 | 2.87 | 22 | 9005 |
| Sint-Jan | city | Vlaanderen | Belgium | 50.87 | 2.90 | 85 | 46640 |
| Sint-Jan Hagebaart | city | Vlaanderen | Belgium | 50.85 | 2.73 | 85 | 22644 |
| Sint-Jan ter Biezen | city | Vlaanderen | Belgium | 50.86 | 2.67 | 137 | 4976 |
| Sint-Jan-in-Eremo | city | Vlaanderen | Belgium | 51.27 | 3.58 | 3 | 3178 |
| Sint-Jan-op-den-Dijk | city | Vlaanderen | Belgium | 51.29 | 3.14 | 3 | 27933 |
| Sint-Jans Goed | city | Vlaanderen | Belgium | 51.20 | 3.55 | 13 | 31035 |
| Sint-Jans op den Dijk | city | Vlaanderen | Belgium | 51.29 | 3.14 | 3 | 27933 |
| Sint-Jans ter Biezen | city | Vlaanderen | Belgium | 50.86 | 2.67 | 137 | 4976 |
| Sint-Jans-Geest | city | Wallonie | Belgium | 50.74 | 4.90 | 328 | 16040 |
| Sint-Jans-Molenbeek | city | Bruxelles-Capitale | Belgium | 50.85 | 4.32 | 75 | 493066 |
| Sint-Janshoef | city | Vlaanderen | Belgium | 51.17 | 4.83 | 45 | 39088 |
| Sint-Janshoeve | city | Vlaanderen | Belgium | 51.17 | 4.83 | 45 | 39088 |
| Sint-Janswijk | city | Vlaanderen | Belgium | 50.93 | 3.64 | 32 | 29300 |
| Sint-Job | city | Vlaanderen | Belgium | 50.93 | 4.03 | 29 | 71231 |
| Sint-Job | city | Bruxelles-Capitale | Belgium | 50.80 | 4.35 | 282 | 411873 |
| Sint-Job-in-'t-Goor | city | Vlaanderen | Belgium | 51.30 | 4.57 | 55 | 36036 |
| Sint-Job-in-’t-Goor | city | Vlaanderen | Belgium | 51.30 | 4.57 | 55 | 36036 |
| Sint-Jooris | city | Vlaanderen | Belgium | 51.13 | 2.78 | 9 | 19650 |
| Sint-Joost | city | Bruxelles-Capitale | Belgium | 50.85 | 4.35 | 157 | 612793 |
| Sint-Joost-ten-Node | city | Bruxelles-Capitale | Belgium | 50.85 | 4.35 | 157 | 612793 |
| Sint-Joost-ten-Noode | city | Bruxelles-Capitale | Belgium | 50.85 | 4.35 | 157 | 612793 |
| Sint-Joris | city | Vlaanderen | Belgium | 51.13 | 3.37 | 32 | 9511 |
| Sint-Joris | city | Vlaanderen | Belgium | 51.13 | 2.78 | 9 | 19650 |
| Sint-Joris-Weert | city | Vlaanderen | Belgium | 50.80 | 4.65 | 164 | 20365 |
| Sint-Joris-Winge | city | Vlaanderen | Belgium | 50.90 | 4.87 | 177 | 10108 |
| Sint-Joris-Winghe | city | Vlaanderen | Belgium | 50.90 | 4.87 | 177 | 10108 |
| Sint-Joris-ten-Distel | city | Vlaanderen | Belgium | 51.13 | 3.37 | 32 | 9511 |
| Sint-Jozef | city | Vlaanderen | Belgium | 51.03 | 4.29 | 19 | 40870 |
| Sint-Jozef-Olen | city | Vlaanderen | Belgium | 51.18 | 4.90 | 49 | 34759 |
| Sint-Jozef-Oolen | city | Vlaanderen | Belgium | 51.18 | 4.90 | 49 | 34759 |
| Sint-Juliaan | city | Vlaanderen | Belgium | 50.89 | 2.94 | 59 | 32979 |
| Sint-Julies | city | Vlaanderen | Belgium | 50.89 | 2.94 | 59 | 32979 |