Shatrughan Prasad Sinha (born 15 July 1946) is an Indian actor and politician. He is a Member of Parliament, Lok Sabha from Asansol constituency as a member of Trinamool Congress. Earlier, he was elected as Member of Parliament, Lok Sabha (2009–2014, 2014–2019) from Patna Sahib. He was also a Member of Parliament, Rajya Sabha during 1996–2002 and 2002–2008. He was a Union Cabinet Minister of Health and Family Welfare and Shipping in the Atal Bihari Vajpayee government. He was a member of standing committee on transport, tourism and culture and member of consultative committee in ministry of external affairs and overseas Indian affairs from 2014 to 2019. In 2016, his biography, Anything but Khamosh, was released.

Sinha first gained popularity in the early-1970s playing supporting roles in hits like Mere Apne, Raampur Ka Lakshman, Aa Gale Lag Jaa, Dost and Do Thug. He achieved stardom with Kalicharan and consistently starred in top–grossing Indian films from the late-1970s to the 1980s, such as Vishwanath, Aadmi Sadak Ka, Jaani Dushman, Kaala Patthar, Dostana, Shaan, Kranti, Naseeb, Khudgarz and Aag Hi Aag, as well as some of his acclaimed performances, include Paras, Blackmail, Heera, Muqabla, Bombay 405 Miles, Naram Garam, Haathkadi, Phaansi Ke Baad, Khoon Bhari Maang and Adharm.

Sinha was born in Patna, Bihar, to Bhuvaneshwar Prasad Sinha and Shyama Devi Sinha on 15 July 1946. He is the youngest of four brothers – Ram, Lakshman, Bharat and himself. He graduated from Patna Science College with a Bachelor of Science. He had a Diploma in Acting from the Film and Television Institute of India Pune. Currently there's a scholarship being awarded in his name in the institute to Diploma students. He moved to Mumbai, where he started his career in the film industry. He is married to former Miss India Poonam Sinha (née Chandiramani).

Sinha got his first acting opportunity to play a Pakistani military officer in Dev Anand's Prem Pujari. Before that, he got a small role as a police inspector in Mohan Sehgal's Sajan in 1969. The release of Prem Pujari was delayed, so his first released film was Sajan. He later appeared in villainous roles in Pyar Hi Pyar, Banphool, Manmohan Desai's Raampur Ka Lakshman, Bhai Ho Toh Aisa, Sultan Ahmed's Heera, and in Vijay Anand's Blackmail.

He played supporting roles in many films before appearing in Gulzar's Mere Apne in 1971. He was cast along with his future wife Poonam Sinha, then called as Komal, in the movie Sabak (1973). He played supporting roles in Khilona, Dulal Guha's Dost in 1974, Aa Gale Lag Jaa, Jheel Ke Us Paar and Gambler in 1970. He acted with Amitabh Bachchan in films like Raaste Ka Paththar, Yaar Meri Zindagi, Shaan and Kala Paththar, of which Shaan was the biggest success. He later acted in Bombay to Goa, Dostana and Naseeb. His films as the lead hero between 1970 and 1975 were not hits. His first successful film as lead hero was in Kalicharan in 1976. Subhash Ghai went with the story of Kalicharan to N. N. Sippy and said he wanted to direct his first film. N. N. Sippy got ready to produce after few days, but wanted to cast only Rajesh Khanna in the lead role of Kalicharan. Then only when N. N. Sippy confirmed with Rajesh Khanna that Khanna did not have dates for the years 1976 and 1977, Sippy asked Subhash Ghai to go ahead with the script and direct Kalicharan with Sinha in the lead.

Sinha played the lead hero were Ab Kya Hoga, Khan Dost, Yaaraon Ka Yaar, Dillagi, Vishwanath, Muqabla and Jaani Dushman. He then became a bankable action hero from early eighties to mid-nineties. He co-starred with Sanjeev Kumar in Bereham, Hathkadi, Baad Aur Badnaam, Chehre Pe Chehra, Hirasat and Qatl. He starred in Hrishikesh Mukherjee's Naram Garam, Brij's Bombay 405 Miles and Taqdeer. He has sung the song "Ek Baat Suni Hai Chachaji" with singer Sushma Shrestha in the film Naram Garam in 1981, composed by R. D. Burman. However, when his films as lead hero like Prakash Mehra's Jawalamukhi, Amjad Khan's Chor Police, Ameer Aadmi Garib Aadmi and Raj Khosla's Mera Dost Meraa Dushman became flops, despite being appreciated by critics, there was threat to his career as lead hero. He also produced and acted in the film Kalka, based on life of coal mine workers, released in 1983.

He then bounced back by bagging roles in films with lead hero as Rajesh Khanna in films like Dil E Nadan, Aaj Ka M.L.A Ram Avtaar, Maqsad and Paapi Pet Ka Sawal Hai. His other hit films in the mid-eighties included Jeene Nahi Doonga, Bhawani Junction, Aandhi-Toofan, Ramkali, Ilzaam and Asli Naqli. He then went on to star with Jeetendra in Hoshiyar, Khudgarz, Ranbhoomi and Mulzim. He co-starred with Dharmendra in Insaniyat Ke Dushman, Loha (1987), Aag Hi Aag (1987), Hawalaat and Zalzala. He was in films like Telephone (1985), Sherni (1988), Khoon Bhari Maang (1988) and Adharm (1992). He starred with Raajkumar in Betaaj Badshah in 1994 and Salman Khan in Chaand Kaa Tukdaa in 1994. Sinha credited Rajesh Khanna for getting Kaalicharan and for the revival of his career as lead hero in the 1980s, however their friendship got affected when Shatrughan Sinha stood as the BJP candidate against Rajesh Khanna in the 1992 election. Though as a Congress candidate Khanna had defeated Sinha by 25000 margin of votes, Khanna was disappointed at Sinha for standing against him in the elections.

Sinha was selected by Rediff as one of the most unconventional actors in Hindi cinema (the others being Ajay Devgan, Amitabh Bachchan, Irrfan Khan, Rajesh Khanna, Rajinikanth, Shahrukh Khan and Sunil Shetty). In 2008, he became a judge on The Great Indian Laughter Challenge show, season 4 on STAR One TV. On 3 October 2009, Sinha appeared on Sony Entertainment Television Asia's show Dus Ka Dum season 2 as host for a special episode. He is currently hosting the Bhojpuri version of the popular game show Kaun Banega Crorepati on Mahuaa channel.