Phineas and Ferb season 5

The revival and fifth season of Phineas and Ferb premiered on Disney Channel on June 5, 2025, with the first ten episodes released on Disney+ the following day. Created by Dan Povenmire and Jeff "Swampy" Marsh, the series centers on stepbrothers Phineas Flynn and Ferb Fletcher (voiced by Vincent Martella and David Errigo Jr.), who spend their summer vacation building elaborate inventions, while their older sister, Candace (Ashley Tisdale), repeatedly attempts to expose their antics to their mother. Meanwhile, their pet platypus, Perry (Dee Bradley Baker), secretly leads a double life as a spy, regularly thwarting the schemes of the inept evil scientist Dr. Heinz Doofenshmirtz (Povenmire). Returning cast members include Caroline Rhea as Linda Flynn-Fletcher, Richard O'Brien as Lawrence Fletcher, Alyson Stoner as Isabella Garcia-Shapiro, Bobby Gaylor as Buford Van Stomm, Maulik Pancholy as Baljeet Tjinder, and Marsh as Major Monogram.

Phineas and Ferb originally ended with its fourth season in 2015, with Povenmire and Marsh continuing to do other work until Povenmire signed a deal with Disney Branded Television at the start of 2023 for a fifth and sixth season. Development began in May, with voice recording commencing by September. The writers' room featured both new and returning writers, and notably saw Vanessa Doofenshmirtz's actress Olivia Olson join her father Martin as a writer. The season has received praise for its return to form, entertainment value, cast performances and characters, although some criticised its lack of reinvention.