Wijerd Jelckama (also spelled Wierd and Wijard) (c. 1490–1523) is a Frisian military commander, warlord and member of the Arumer Zwarte Hoop ("Arumer Black Hope").
He is the lieutenant of Pier Gerlofs Donia (also known as Grutte Pier) and fights along his side against the Saxon and Hollandic invaders.
Jelckama takes Donia's place as leader of the freedom fighters after Donia dies in 1520.