Teesri Manzil (translation: Third Floor) is a 1966 Indian musical mystery film directed by Vijay Anand and produced by Nasir Hussain. Released on 21 October 1966, the film stars Shammi Kapoor and Asha Parekh in titular roles and Helen, Premnath, Iftekhar and Prem Chopra in supporting roles. With the music and songs setting records, this film became a hit at the box office and is considered among the best offerings and one of the first breakthroughs of R. D. Burman's career.

Indiatimes Movies ranks the film amongst the Top 25 Must See Bollywood Films. The film is noted for its memorable lead pair, superb mystery, tight script and performance by Shammi Kapoor.

The film's DVD and VCD versions run for 145 minutes, while the theatre version ran for 175 minutes. Between Ruby's jealous sniping at minute 76 and the song "Dekhiye Sahiban Woh Koi Aur Thi", sung by Mohammed Rafi, approximately 30 minutes of footage is missing. The last time a full version of this film released was on VHS. Many people in China and Hawaii reviewed it five stars. Now uncut full movie is available on YouTube and if its OTT presentation is concerned, it is available in ZEE5 since early 2020.