Mandira and Raj were married in 1999. In 2011, their first child, Vir, was born. The couple adopted a 4-year old girl last year and named her Tara Bedi Kaushal.
Many Bollywood stars took to social media in grief for Raj's death.
Riteish Deshmukh wrote, "Raj Kaushal is a man with a hearty smile, tight hug, and a story. I am deeply shocked and saddened to hear that he has passed away. My deepest sympathies to @mandybedi, his entire family. #heartbroken.
Suniel Shetty wrote, "Another precious, lost life!" Raj Kaushal, Rest in Peace. You'll be greatly missed. We send you and your children lots of love @mandybedi
Arshad Warsi, who worked with Raj in Anthony Kaun Ha, posted the following: "Today, I lost a very dear buddy, my condolences go to his family. Raj Kaushal was a friend for many years. He enjoyed every moment of Raj's company. He was always smiling and always available if you needed him. I will miss you brother.
Neha Dhupia wrote on Twitter: "Raj, we took that picture to create more memories... can't imagine you arent with us anymore... Mandira, my strong, strong girl, I am at an impasse of words. My heart belongs to Vir & Tara... I am shaken and in shock as I write this - RIP Raj.