Merckx may refer to:
- Eddy Merckx, a bicycle racer of the 1960s and 1970s, and the father of Axel Merckx
- Axel Merckx, a member of the European peloton
- Eddy Merckx (billiards player), a three-cushion billiards player
- Eddy Merckx metro station, a metro station of the Brussels Metro