- Box Office Bomb: Budget, $39 million. Gross, $12,463,520 ($10,763,520 domestic and $1,700,000 overseas). It ended up tied with Action Point for the worst opening weekend numbers of 2018 and after three weeks was only playing in around a hundred locations, down from nearly two thousand on release and was removed from release after four weeks. The film is projected to lose Universal $60 million.
- Creator Killer: After both The Walk and Allied bombed, Welcome to Marwen might be this for director Robert Zemeckis after it tied for the worst opening weekend of the year and is on course to lose the studio $60 million.
- Working Title: The film was originally going to be titled The Women of Marwen before the title was changed during production.
Trivia / Welcome to Marwen