Which longtime Dodgers pitcher retired after the 2025 season?

The longtime Dodgers pitcher who retired after the 2025 season was Clayton Kershaw.

Kershaw announced in September 2025 that he would retire at the end of the season, concluding an 18-year Major League career spent entirely with the Dodgers. His departure meant the 2026 club had no Kershaw on its active roster for the first time since 2007, his first full season in the majors.

The left-hander became one of the defining pitchers of his generation. He won three National League Cy Young Awards, captured the 2014 National League Most Valuable Player Award and surpassed 3,000 career strikeouts. Kershaw also helped Los Angeles win World Series championships in 2020 and 2025.

The other choices were pitchers who had Dodgers connections but did not fit the question. Blake Snell and Tyler Glasnow remained active, while Walker Buehler left Los Angeles for another club rather than retiring. Kershaw’s full-career association with the Dodgers is what makes him the canonical answer.