Theodore Alexander "Teddy" Lightner (14 September 1893 – c. 22 November 1981) was an American bridge player. He developed the Lightner double, a bridge bidding convention. Lightner was born in Grosse Pointe, Michigan, and moved to Chicago and later to New York City. He graduated from Yale University and from Harvard Law School. He was a lawyer and had a seat on the New York Stock Exchange. Apparently, he died from a heart attack days before his body was discovered in his New York apartment on November 22, 1981. Lightner was inducted into the ACBL Hall of Fame in 1999. According to Victor Mollo: