Lionel Charles Renwick Emmett (8 January 1913 – 9 August 1996) was an Indian field hockey player and physician who competed in the 1936 Summer Olympics.

He was a member of the Indian field hockey team, which won the gold medal.

He served as a medical officer is the Indian Army Corps in field hospitals in India and Burma.

He patented an Intra uterine contraceptive device named Copper Omega.

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