The North East Tennis Association junior summer competition season for 2020/21 consisted of 13 rounds with 156 teams competing each week.
Tennis SA and North East Tennis Association would like to thank the club volunteers who looked after their respective teams during the season and formally congratulate the following winners:
Friday Junior Competition
| Boys | |
| A1 | Golden Grove |
| A2 | Trinity Playford |
| A3 | Tea Tree Gully |
| A4 | Modbury |
| Girls | |
| A1 | Prospect |
| A2 | Tea Tree Gully |
| A3 | Enfield |
Saturday Junior Competition
| Boys | |
| Division 1 | Hope Valley |
| Division 2 | Greenacres |
| Division 3 | Enfield |
| Girls | |
| Division 1 | Pooraka |
Green Ball Competition
| Boys | |
| Division 1 | Prospect |
| Division 2 | Tea Tree Gully |
| Division 3 (Green) | Pooraka |
| Division 3 (Blue) | Para Hills |
| Girls | |
| Division 1 | Tea Tree Gully |
| Division 2 | Golden Grove |