Identical twin males

Jan Martel (5 March 1896 – 16 March 1966) and Joël Martel (5 March 1896 – 25 September 1966) were French sculptors and identical twin brothers. The twins were born in Nantes and were among the founding members of Union des Artistes Modernes (UAM). Their works include ornamental sculptures, statues, monuments and fountains displaying characteristics typical of the Art Deco and Cubist periods. Their work was part of the sculpture event in the art competition at the 1948 Summer Olympics.

Donald Roy Robbins (October 27, 1933 – September 18, 2020) was an American football coach. He was the head coach at the University of Idaho from 1970 through 1973, compiling a record of 20–24.

Sir David Rowat Barclay (27 October 1934 – 10 January 2021) and Sir Frederick Hugh Barclay (born 27 October 1934), commonly referred to as the "Barclay Brothers" or "Barclay Twins", were British billionaires. They were identical twin brothers and, until the death of David in 2021, had joint business interests primarily in media, retail and property.
The Sunday Times Rich List of 2020 estimated their wealth at £7 billion. They earned a reputation for avoiding publicity and have often been described as reclusive.
David's son, Aidan, manages their UK businesses. Their businesses have been accused of tax avoidance, by placing assets under ownership of companies registered abroad and controlled through trusts. Their Press Holdings company owns Apollo and The Spectator magazines and, through a wholly owned subsidiary (Press Acquisitions Limited), they also own Telegraph Group Limited, parent company of The Daily Telegraph and The Sunday Telegraph.In 1993, the brothers bought the lease of the island of Brecqhou, one of the smallest of the Channel Islands, just off the coast of Sark.

The Otwell Twins are an American singing duo made up of identical twin brothers Roger and David, born August 2, 1956, in Tulia, Texas. They are best known as members of The Lawrence Welk Show from 1977 to 1982.
Singing and playing the guitar since their days in junior high and in high school, the brothers joined the Welk organization in October 1977, after attending Lubbock Christian College and West Texas State University teaming up with fellow sibling act The Aldridge Sisters as the popular quartet of The Aldridge Sisters and the Otwell Twins, which was popular with viewers for the remainder of the Welk show's run [1].
Since then, the Otwells have performed in concerts, churches, special events as well as for wraparound segments for Welk show reruns on public television. Today, the brothers reside in Amarillo with their families. They are engaged in the petroleum and water filtration businesses.