Roethlisberger's name has been replaced with Lemieux's on a display that compares the height of elephants with other creatures.
Zoo spokeswoman Tracy Gray says some zoo visitors had expressed concerns about Roethlisberger's name on the display. She says Lemieux, the retired Pittsburgh Penguins star and team owner, is well-known and approximately the same height as Roethlisberger, about 6-foot-5.
"Mr. Roethlisberger isn't the most popular person lately," Gray, manager of public and media relations, told the Pittsburgh Post-Gazette.
The NFL has suspended Roethlisberger up to six games for his actions at a Georgia nightclub where a 20-year-old college student accused him of sexual assault last month. Roethlisberger wasn't charged with any crime.
Information from The Associated Press was used in this report.