The 57th running of the Tour of Flanders cycling race in Belgium was held on Sunday 1 April 1973.

Belgian Eric Leman won the classic ahead of Freddy Maertens and Eddy Merckx.

Cycling icon Eddy Merckx was the pre-race favourite, but despite several attempts, he failed to distance Leman, Maertens and De Geest on the Muur van Geraardsbergen and the run-in to the finish.

In a four-man sprint Eric Leman narrowly beat Freddy Maertens.

[3] Leman became the third rider to win the Tour of Flanders three times, equalling the previous record of Achiel Buysse and Fiorenzo Magni.