Ghattamaneni Mahesh Babu (born 9 August 1975) is an Indian actor, producer, media personality, and philanthropist who works in Telugu cinema. One of the highest-paid actors in Indian cinema. He has appeared in more than 25 films, and won several accolades including, Nine Nandi Awards, five Filmfare Telugu Awards, four SIIMA Awards, three CineMAA Awards, and one IIFA Utsavam Award. He also owns the production house G. Mahesh Babu Entertainment.

The younger son of veteran Telugu actor Krishna, Mahesh made his debut as a child artist in a cameo role in Needa (1979), at the age of four, and acted in eight other films as a child artist. He made his debut as a lead actor with Rajakumarudu (1999) which won him the Nandi Award for Best Male Debut. Babu achieved his breakthrough with the supernatural drama Murari (2001), and the action film Okkadu (2003). He went on to act in other commercially successful films such as Arjun (2004), Athadu (2005), Pokiri (2006), Dookudu (2011), Businessman (2012), Seethamma Vakitlo Sirimalle Chettu (2013), Srimanthudu (2015), Bharat Ane Nenu (2018), Maharshi (2019), Sarileru Neekevvaru (2020) and Sarkaru Vaari Paata (2022). Pokiri held the record of being the highest-grossing Telugu film, Maharshi won the National Film Award for Best Popular Film, while Sarileru Neekevvaru, his highest grosser, collected over ₹260 crore at the box office.

Referred to in the media and by his fans as "Superstar" and "Prince", he is one of the most popular actors of Telugu cinema. In addition to being an actor, he is a humanitarian and philanthropist – co running the charitable trust and non-profit organisation Heal A Child. He is also associated with Rainbow Hospitals as their goodwill ambassador. He entered into the film exhibition business alongside the late Narayandas Narang of Asian Group with the inauguration of the seven-screen multiplex, AMB cinemas at Gachibowli, Hyderabad. He married actress Namrata Shirodkar in 2005, with whom he has a son and a daughter.