Kaitlin Olson Shares Heartfelt Remembrance Following Her Father's Passing

Kaitlin Olson has shared a deeply personal message following the passing of her father, Don Olson.

The 50-year-old actress, recognized for her work on It's Always Sunny Philadelphia, High Potential, and Hacks, posted her tribute on Instagram Monday, May 18. In the emotional message, she grappled with making such a private loss public, writing that it felt wrong to continue forward without acknowledging what had happened.

"My dad died. My first love, my first protector and my forever favorite person," Olson wrote, describing her father's long fight to remain with his family. She reflected on the difficulty of finding adequate words, expressing that being his daughter was among the greatest gifts of her life—second only to the privilege of being present during his final moments.

"I will keep all my promises. Just like you," she concluded, accompanying her words with a collection of photographs spanning years of their relationship.

Her husband, Rob McElhenney, 49, also paid tribute in the comments section, sharing his own reflections on his late father-in-law. The actor wrote about his admiration for Don's character and the profound love he showed his daughter, noting that his goal moving forward is to embody the qualities that made Don such an exceptional person. McElhenney noted that he had the honor of being Don's son for the past 17 years.