Baweja's is born to Harry Baweja director and and producer Pammi Baweja. His family are Jatt Sikhs. He received his education in Mumbai, starting at Jamnabai Narsee School. He later attended Kishore Namit Kapoor's Acting Institute. His debut film in Bollywood was the sci-fi romance Love Story 2050. It tanked at the box office, where it had been pitted against Imran Khan's and Genelia D'Souza's Jaane Tu Ya Jaane Na. Harman was criticized for being a look-alike of Hrithik Roshan.
He was dating his Love Story 2050 co-star, Priyanka Chopra and is now rumored dating Amrita Rao. His current projects involve Victory where he plays a cricketer, Ashutosh Gowariker's What's Your Raashee? and Chenab Gandhi directed by Vibhu Puri and written by Bhavani Iyer, who also wrote for Black. A departure from romance, this songless film revolves around three characters played by Amitabh Bachchan, Harman Baweja and Vidya Balan and centers around Indian freedom fighter, Khan Abdul Ghaffar Khan, also known as Frontier Gandhi.Also a little 11 year old is named after him. Then he is also acting in a unnamed movie which will be directed by sanjay leela bansali.