Jacek Tadeusz Morajko (born 26 April 1981) is a Polish former road racing cyclist, who rode professionally between 2003 and 2018 for the Antarte–Rota dos Móveis, Madeinox–Boavista, Mróz–Active Jet, Vacansoleil–DCM, CCC–Polsat–Polkowice (two spells) and Wibatech Merx 7R teams.
Born in Opole, Morajko made his professional debut in 2003 for the team Antarte–Rota dos Móveis.
In 2007, he was finished second at the Polish National Road Race Championships.