Lech Piasecki (born 13 November 1961) is a Polish former racing cyclist.

Born in Poznań, he became the first Polish cyclist to wear the yellow jersey in the Tour de France, in 1987.

[1] After Piasecki became Amateur world champion in 1985, the Colnago team wanted to sign him.

[2] His first victory as a professional cyclist was in a time trial in the 1986 Giro d'Italia, where he beat many favourites.

[4] In the 1987 Tour de France, Piasecki became second in the prologue, and took the yellow jersey after finishing in the lead group of Stage 2.