Roja married Tamil film director R. K. Selvamani on 10 August 2002. The couple have a daughter and a son.
Roja had a penchant for hairdressing and it was evident as whenever she was on the sets she was seen hairdressing her peers like Devayani, Khushbu, Ranjitha and Mumtaz to name a few. According to Ramya Krishna, her friend and co-star, Roja is one of the few artists who can do their makeup themselves. Actress Mumtaz in an interview praised Roja's willingness and egoless attitude when she did her hair and make-up during a Singapore Film Show in 2003.
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