Probably best remembered for playing Om Agarwal in the long running Hindi soap-opera Kahaani Ghar Ghar Kii (2000-2008), Kiran Karmarkar is an Indian television, film and theatre actor. He started his acting career through Marathi theater and various cameos on television and commercial advertisements. Kiran's first major roles came in the Ekta Kapoor show, Ghar Ek Mandir (2000-2002). Although he made his acting debut with an uncredited appearance in the 2001 religious drama, Shirdi Sai Baba, it was the 2004 movie Thoda Tum Badlo Thoda Hum that saw Kiran in a credited role for the first time. Kiran was a constant fixture on TV with shows like Thodi Si Zameen Thoda Sa Aasmaan (2006-2007), Kahaani Hamaaray Mahaabhaarat Ki (2008), Uttaran (2008-2015), Badalte Rishton ki Dastaan (2013), and Dhhai Kilo Prem (2017). Kiran has also acted, especially in the last few years, in Hindi and Marathi movies like Just Married (2007), Pankh (2010), Raajneeti (2010), Aaghaat (2010), Force (2011), Shanghai (2012), Chakravyuh (2012), Bhatukali (2014), Crazy Cukkad Family (2015), Janiva (2015), Jai Gangaajal (2016), Kanha (2016), and Family Katta (2016).

In 2018 Kiran acted alongside Mukta Barve, Priya Bapat, Bhushan Pradhan and Prasad Barve in director Pratima Joshi's drama, Aamhi Doghi.