Hartham Common is very sports-orientated, with many different sports being practiced in the area. A selection includes football, rugby, tennis, fishing, bowls, kayaking and canoeing. A full gym and swimming pool is located on the edge of the park next to Kallum Weir.
Clubs and organisations
Organisations with physical presence on the common include:
- Hartham Pool and Gym
- Hertford Lawn Tennis Club
- Herts Canoe Club
- Sele Farm Bowls Club
- Hertford Basin – a marina for narrowboats.