Ignacy Trzewiczek (born September 23, 1976) is a Polish game designer and long-time role-playing game writer. Author of Boardgames That Tell Stories – collection of essaywork written with famous designers like Rob Daviau, Antoine Bauza, Bruno Cathala, Mike Selinker and many more.

Since 1999 Ignacy Trzewiczek is the owner and CEO of publisher Portal Games.