Subramanian (died 1991), known professionally as Rajasekhar (/rɑːdʒəseɪkər/) was an Indian film director and screenwriter who was active mainly in Tamil cinema during the 1980s.
Rajasekhar was born as Subramanian in Nattarasankottai in the then Ramanathapuram district and was a Bachelor of Science graduate.
Prior to his entry in films, he was working in government department and few people encouraged him to write scripts as they felt he had a creator in him thus he wrote story for the 1977 release Naam Pirandha Mann.
Rajasekhar's other major credits include Malaiyoor Mambattiyan, Eetti, Cooliekkaran, Paatti Sollai Thattathe and its Telugu remake Baamma Maata Bangaru Baata.
Rajasekhar died in 1991, shortly after the release of his last film Dharma Durai at the age of 43.