Melissa Ivy Rauch (/raʊʃ/; born June 23, 1980) is an American actress. She is best known for playing Bernadette Rostenkowski-Wolowitz on the CBS sitcom The Big Bang Theory, for which she was nominated for the Critics Choice Television Award in 2013. From 2004 to 2008, Rauch worked as a regular contributor on the VH1 series Best Week Ever.
Rauch's other acting credits include playing Tina on the American remake of Kath & Kim, Summer on the HBO fantasy horror drama True Blood, and currently plays the lead role on NBC's revival of Night Court.
Rauch also starred in, co-wrote, and co-produced the 2015 sports comedy-drama film The Bronze and provided the voice of DC character Harley Quinn in the 2017 animated film Batman and Harley Quinn. Rauch also had supporting roles in I Love You, Man (2009), Ice Age: Collision Course and Flock of Dudes (both 2016), and Ode to Joy and The Laundromat (both 2019).