Which actress portrayed Penny Mosby, Ted's daughter?

Lyndsy Fonseca portrayed Penny Mosby, Ted's daughter.

Penny is one of Ted Mosby's two children in How I Met Your Mother and appears in the framing scenes as he tells her and her brother Luke the story of meeting their mother. Fonseca plays Penny in the scenes set when the children are teenagers in 2030.

David Henrie portrays Luke, Penny's brother. The show's production team filmed some future footage early because the young actors would age noticeably during the series' long run. Fonseca and Henrie also signed confidentiality agreements to protect the finale's secrets.

Penny is sometimes confused with the actresses who played other important women in Ted's life, including Cristin Milioti as Tracy, Cobie Smulders as Robin, and Ashley Williams as Victoria. Fonseca also appeared in the framing story when Penny was an infant, while younger versions were played by other performers.