Crommelynck may refer to:

• Fernand Crommelynck (1886–1970), Belgian dramatist
• Aldo Crommelynck (1931–2008), Belgian printmaker, son of Fernand
• Duo Crommelynck (1974–1994), classical piano duo of Patrick Crommelynck and Taeko Kuwata
• Eva van Crommelynck, a character in novels by David Mitchell

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