Rehnaa Hai Terre Dil Mein (transl. To Reside In Your Heart), also known by the initialism RHTDM, is a 2001 Indian Hindi-language romantic drama film written and directed by Gautham Vasudev Menon, starring R. Madhavan, Saif Ali Khan and Dia Mirza in the lead roles. The film is a remake of the director's own Tamil film Minnale (released in the same year), which also starred Madhavan in his reprised role. This is Dia Mirza's debut film as well as Tamil actor, Madhavan's official Bollywood debut film after having an uncredited appearance in the song "Chup Tum Raho" in Is Raat Ki Subah Nahi.

The film revolves around the love story of Madhav "Maddy" Shastri (Madhavan) and Reena Malhotra (Mirza). The latter is set to get engaged to Rajeev "Sam" Samra (Khan), who is a young man settled in the US and Maddy's former college rival. The film though did not perform well at box office during its release, achieved popularity through reruns on TV and achieved a cult status.

The film was re-released on 30 August 2024, earning over ₹3.50 crore and ranking as the 16th highest-grossing re-released Indian film in history.