| Administrator(s) | Test and County Cricket Board |
|---|---|
| Cricket format | Limited overs cricket(40 overs per innings) |
| Tournament format(s) | League |
| Champions | Kent (2nd title) |
| Participants | 17 |
| Matches | 136 |
| Most runs | 668 John Hampshire (Yorkshire) |
| Most wickets | 28 Dennis Marriott (Middlesex) |
The 1973 John Player League was the fifth competing of what was generally known as the Sunday League. The competition was won for the second consecutive year by Kent County Cricket Club.