Is Kaitlin Olson related to the Olsen twins? Actress' link debunked

Amber Peake August 10, 2022
Is Kaitlin Olson related to the Olsen twins? Actress' link debunked
Photo by Amy Sussman/Getty Images


This week saw It’s Always Sunny in Philadelphia actor Rob McElhenney host Jimmy Kimmel Live! While the TV host takes a break from his late-night show duties. 

On Tuesday (August 9), McElhenney was joined by his fellow Always Sunny co-star and wife, Kaitlin Olson, as she appeared on the talk show as his guest. 

Following her appearance, alongside her husband, the star’s surname appears to have also sparked interest as some have wondered if Kaitlin Olson is related to the Olsen twins. 

We take a look at whether the actress is related to the former child star twins. 

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Is Kaitlin Olson related to the Olsen twins?

No, while both Kaitlin Olson and the Olsen twins have similar sounding surnames, Mary-Kate and Ashley Olsen and the, It’s Always Sunny In Philadelphia actress are not related. 

If you hadn’t already noticed, Kaitlin’s last name ends in ‘son’ while the Full House alum’s surname ends in ‘sen.’

Mary-Kate and Ashley were born to father David Olsen and mother Jarnette, who are also parents to their younger sister, Elizabeth, who Marvel fans will recognise for her role as Wanda Maximoff across the franchise.

Mary-Kate and Ashley are also sisters to their older brother Trent as well as half-sister Courtney and a half-brother Jake who they are related to through their father’s second marriage. 

Photo by Kevin Winter/Getty Images

People have previoulsy mistaken Kaitlin Olson for Elizabeth Olsen

While Kaitlin and the Olsen twins do not bear a family relation, over the years, Kaitlin and their younger sister Elizabeth have been linked by some on social media. 

Despite Kaitlin being 13 years older than Elizabeth, some users on Twitter appear to have previously confused the two actresses for one another. 

There is even a line on the biography page of Kaitlin’s IMDb which mentions the confusion as it reads: “Sometimes mistaken in her films for Elizabeth Olsen.”

The line goes on to clarify that while she has been mistaken for Elizabeth, she is not related to the Olsen twins. 

Photo by Rodin Eckenroth/WireImage

Kaitlin Olson’s family life explored

Kaitlin hails from Portland, Oregon and was to her mom Melinda Lenora and father Donald Olson.

She grew up on a small farm and, in an interview with Oregon Live in 2010, admitted the farm was “quiet and secluded” and that she loved being around her family.

The actress is married to her It’s Always Sunny In Philadelphia co-star Rob McElhenney. The couple tied the knot in 2008 and this year celebrated 14 years of marriage. 

During their marriage, the couple have welcomed two sons together, Axel, 11 and Leo 10.

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Amber is an entertainment journalist with a love for anything showbiz, celeb or reality TV. After graduating with a degree in Journalism at Brunel University she became a Showbiz Reporter at Having written for both HITC and The Focus, Amber is now a staff writer for The Focus covering the latest celeb and entertainment trends.