Rahmatullah () is a male or female Muslim name and, in modern usage, surname, meaning mercy of God. It may refer to:
Males
Rahmatullah Kairanawi (1818–1891), Indian Muslim scholar and author
Shaikh Rahmatullah al-Farooq, name used by Rowland Allanson-Winn, 5th Baron Headley (1855–1935), Irish peer and convert to Islam Chaudhari Rehmatullah Aslam, known as C. R. Aslam (1913–2007), Pakistani politician Shahzada Rehmatullah Khan Saddozai (1919–1992), Pakistani tribal leader and politician Rahmatu'lláh Muhájir (1923-1979), Iranian Bahá'í missionary Mian Muhammad Rahmatullah (born 1940), Presidential aide, and Chief of Public Works Departments of Bangladesh Rahmatullah Safi (born 1948), Afghan military officer listed as the Taliban's European ambassador Sayed Rahmatullah Hashemi (born 1978), roving Taliban ambassador, who accepted a scholarship to attend Yale University Rahmatullo Fuzailov (born 1978), Tajik footballer Rahmatullah Rahmat, Afghan provincial governor Rahmatullah Raufi, Afghan provincial governor Rahmatullo Zoirov, Tajik politician Rahmatullah Hanefi, Afghan human rights worker, who secured the release of Italian hostages, arrested by Afghan authorities Rahmatollah Khosravi, Iranian politician Rahmatollah Moghaddam Maraghei, Iranian politician , Iranian politician Rahmatollah Hafezi, Iranian politician Rehmatullah (cricketer) (born 1998), Pakistani cricketer Rehmatullah Khan, known as Rehmat Khan, Pakistani squash player and coach Yunus Rahmatullah (born 1982), Pakistani arrested in Iraq by British forces in 2004 and then rendered to a US prison in Afghanistan where he was secretly held without charge or trial for at least seven years Secretary of State for Foreign and Commonwealth Affairs v Rahmatullah, a UK Supreme Court case relating to Yunus Rahmatullah