The Southern Districts Tennis Association junior summer competition season for 2021/22 consisted of 15 rounds with 159 teams competing each week, while the senior season consisted of 16 rounds with 90 teams competing each week.
Tennis SA and Southern Districts Tennis Association would like to thank the clubs and junior coordinators for their hard work and dedication to the sport and would like to formally congratulate the following winners:
JUNIOR COMPETITION
| Boys | |
| Premier | Morphett Vale |
| Division 1 | Reade Park |
| Division 2 | Coromandel Valley |
| Division 3 | O'Halloran Hill |
| Division 4 | Happy Valley |
| Division 5 | Denman |
| Division 6 | Reade Park |
| Division 7 | Noarlunga |
| Division 8 | Hope Ward |
| Division 9 | Hope Ward |
| Girls | |
| Premier Girls | Denman Dark Blue |
| Division 1 Girls | McLaren Vale Blue |
| Division 2 Girls | Denman Dark Blue |
| Division 3 Girls | Hope Ward |
| Division 4 Girls | Walford |
| Green Ball Competition | |
| Green Ball Boys Division 1 | Denman |
| Green Ball Boys Division 2 | Denman/Bellevue Heights |
| Green Ball Girls | Walford Yellow |
| Green Ball Mixed (South) | O'Halloran Hill Blue |
| Green Ball Mixed (North) | Tennis World Millswood |
SENIOR COMPETITION
| Men | |
| Division 1 | McLaren Vale/Bellevue Heights |
| Division 2 | Happy Valley Blue |
| Division 3 | Kesmond |
| Division 4 | Kingswood |
| Division 5 | Denman Light Blue |
| Division 6 | Noarlunga |
| Division 7 | Happy Valley |
| Women | |
| Division 1 | Flagstaff Hill |
| Division 2 | Hope Ward Maroon |
| Division 3 | Denman |
| Division 4 | Flagstaff Hill |
| Mixed Doubles | |
| Mixed Doubles 2M/2W | Denman Dark Blue |