Severin Lüthi (born 5 January 1976) is a Swiss tennis coach and former player. He has coached the Swiss Davis Cup Team for many years and has also been a long-time coach of Roger Federer. Lüthi grew up in Stettlen, on the outskirts of Bern. He played tennis in his youth and once beat Gustavo Kuerten. He gave up tennis at the age of 20 and served a commercial apprenticeship with his father's company. He has toured with Federer since 2007. He coached the team that won the Davis Cup for Switzerland in November 2014, as Roger Federer beat Richard Gasquet.