Sonia Singh (born 4 November 1964) is an Indian television actress. She is well known for her role as Dr. Kirti Mehra in Star One's most popular show Dill Mill Gayye, Richa Thakral in Parichay, Sushma (Sush) in Bhabhi and Antara in Kumkum - Ek Pyara Sa Bandhan. Singh made her acting debut in 2003 with the TV series Kya Hadsaa Kya Haqeeqat. In Kumkum, she was portraying the role of Antara and then played the role of Sushma (Sush) in the TV series Bhabhi. She is famous for portraying negative characters in most of the TV series, and her vamp role in the TV series Kumkum got her nominated for Favourite Khalnayika.
She has won a lot of acclaim for the perfect portrayal of vamp roles. After playing negative characters she bagged the role of a protagonist character in the TV series Dill Mil Gaye, where she plays the role of Dr. Kirti Mehra. The show was being aired on Star One but was taken off due to bad TRP ratings. Singh has also played a double role in the TV series Naaginn. Besides that she has acted in TV serials like Ssshhhh Phir Koi Hai, Bhagyavidhata, Yahaan Main Ghar Ghar Kheli, Parichay, Veer Shivaji and Doli Saja Ke. Recently she bagged the role of a negative character Angana in the TV series Jhilmil Sitaaron Ka Aangan Hoga.