Priya Koothrappali

Priya Koothrappali is Raj's sister.  She also has dated Leonard off and on.  Unlike most of the characters on 'The Big Bang Theory', Priya doesn't have a degree in science.  However, she does have a law degree and graduated at the top of her class, plus she's licensed to practice law in 3 countries.  Neither Raj nor Priya's parents were comfortable with Priya dating Leonard.

Priya is played by Aarti Mann.