Jakub Mareczko (born 30 April 1994) is an Italian road cyclist of Polish origin,[4] who last rode for UCI ProTeam Team Corratec–Vini Fantini.

[10][11] Mareczko's first wins as a professional cyclist came in the 2015 Vuelta al Táchira (a 2.2 race where many of the riders are amateurs), where he won stages 3 and 4.

Mareczko's cobbled classics season then continued with his participation in Dwars door Vlaanderen, E3 Harelbeke, Gent–Wevelgem, the Three Days of De Panne and the Scheldeprijs, although he finished none of these races.

[20] At the 2022 ZLM Toer Mareczko won the bunch sprint for Stage 2 however, he was relegated soon after and Olav Kooij named as the winner.

[citation needed][21] Mareczko won the following day's stage into Buchten [nl],[22] and ultimately finished the race second overall, behind Kooij.