This is an episode guide for Thunderbirds, a British Supermarionation television series produced by AP Films (later named Century 21 Productions) from 1964 and first broadcast on the ITV network in 1965 and 1966. It lists both the TV episodes and the 1960s audio plays by Century 21 Records, along with their adaptations.
Two feature film sequels to the TV series were released in 1966 and 1968, followed by three made-for-TV compilation films in the early 1980s. In 2015, a mini-series based on the three original audio stories was produced to mark the series’ 50th anniversary.
Series One of Thunderbirds comprised 26 episodes, each approximately 50 minutes long. Episodes are listed in the official order published by distributor ITC Entertainment, which matches the order of production.