Standings for the 2021 Class B boys basketball season are below. Standings can be submitted to sports@ktvh.com.
District 1B
(Last updated Feb. 22, 2021)
| Conf. | Overall | |
| Fairfield | 11-1 | 12-6 |
| Shelby | 10-2 | 14-3 |
| Rocky Boy | 9-3 | 10-6 |
| Conrad | 6-6 | 6-8 |
| Cut Bank | 4-8 | 4-9 |
| Great Falls Central | 2-10 | 2-12 |
| Choteau | 0-12 | 0-15 |
District 2B
(Last updated Feb. 22, 2021)
| Conf. | Overall | |
| Malta | 6-2 | 9-5 |
| Harlem | 5-3 | 7-4 |
| Glasgow | 5-3 | 8-8 |
| Wolf Point | 2-6 | 3-9 |
| Poplar | 2-6 | 3-10 |
District 3B
(Last updated Feb. 8, 2021)
| Conf. | Overall | |
| Colstrip | 6-1 | 10-2 |
| Lodge Grass | 5-1 | 9-3 |
| Lame Deer | 3-2 | 3-4 |
| Baker | 2-5 | 3-7 |
| Forsyth | 0-7 | 0-12 |
District 4B
(Last updated Feb. 22, 2021)
| Conf. | Overall | |
| Huntley Project | 9-1 | 11-4 |
| Red Lodge | 7-2 | 12-2 |
| Columbus | 7-3 | 10-5 |
| Shepherd | 3-7 | 5-9 |
| Joliet | 2-7 | 2-12 |
| Roundup | 1-9 | 3-12 |
District 5B
(Last updated Feb. 15, 2021)
| Conf. | Overall | |
| Manhattan | 8-1 | 9-2 |
| Townsend | 5-2 | 7-3 |
| Jefferson | 5-3 | 7-5 |
| Three Forks | 4-4 | 4-10 |
| Big Timber | 2-7 | 5-8 |
| Whitehall | 0-8 | 1-10 |
District 6B
(Last updated Feb. 19, 2021)
| Conf. | Overall | |
| Florence | 6-1 | 9-3 |
| Deer Lodge | 6-1 | 10-2 |
| Missoula Loyola | 4-4 | 8-10 |
| Anaconda | 3-5 | 4-8 |
| Arlee | 0-8 | 0-13 |
District 7B
(Last updated Feb. 19, 2021)
| Conf. | Overall | |
| Bigfork | 7-1 | 11-2 |
| Thompson Falls | 6-2 | 11-4 |
| St. Ignatius | 4-3 | 9-6 |
| Eureka | 2-6 | 5-12 |
| Troy | 0-7 | 1-9 |
