Idema is a Dutch and West Frisian patronymic surname meaning "son of Ide".^[1][2] Variant forms are Iedema, IJdema, and Ydema. People with the surname include:

• Dan Idema (born 1985), Canadian poker player
• David Cole Idema (born 1950), American soft rock singer
• Jonathan Idema (1956–2012), American bounty hunter and vigilante running a private prison in Afghanistan
• Wilt L. Idema (born 1944), Dutch Sinologist and Harvard University professor

• IDEMA