Owns/owned a chocolate colored labrador called Gracie.
Parents: Joan Virginia and Thomas James Mulgrew
Received an Honorary Doctorate of Letters for Artistic Contribution from Seton Hill University in Greensburg, Pennsylvania.
She is good friends with fellow "Star Trek" alumnus John de Lancie ("Q").
She won the Tracey Humanitarian Award for her performance as driven alcoholic news anchor Hillary Wheaton on a 1992 episode of "Murphy Brown" (1988) entitled "On the Rocks".
Siblings: Tom Mulgrew, Joe, Jenny, Laura, Sam.
The godfather of her two sons is Kevin Tighe. She and Tighe got the chance to work together in Voyager's 5th season episode #23 "11:59".
The John R. Maxim novel "Abel Baker Charlie" has a character with her name.
Was a friend of the late John Kennedy Jr. and attended his funeral with husband Timothy Hagan.
Was initially turned down for the role of Capt. Janeway on "Star Trek: Voyager" (1995), in favour of Geneviève Bujold. When Bujold backed out of the project two days into shooting, Mulgrew again auditioned for the role, and won it!
When cast for the role of Capt. Janeway, Mulgrew asked that the character's first name be changed from Nicole to Kathryn. The producers agreed.
Won the award for Best Actress at the 29th annual Carbonell Awards for her portrayal of Katharine Hepburn in 'Tea at Five'.