Leon De Lathouwer (19 September 1929 – 7 August 2008) was a Belgian road cyclist.

He won a gold medal in the team road race at the 1948 Summer Olympics in London, together with Lode Wouters and Eugène Van Roosbroeck, and placed fourth in individual road race.

In the early 1950s, he turned professional and won several local races before retiring in 1959.

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