Josh Donn (or Jdonn, as he is commonly known in the world of bridge) is a professional bridge player, teacher, and writer. He was a member of the winning US junior team at the World Junior Team Championships in 2006. He won the Jacoby Open Swiss Teams recently in St. Louis, the Blue Ribbon Pairs in 2011, and the Roth Open Swiss Teams three times, in 2008, 2016, and 2019.

Josh first learned bridge in 1996, playing exclusively with his parents and grandparents for the first several years. He graduated from the University of Rochester in 2004 with a double major in mathematics and economics and a minor in actuarial studies. He moved to Los Angeles for two years and worked as an actuary, before finally settling in Las Vegas in 2006. He worked as a supervisor and manager in the Casino Accounting departments of several major casinos for the next eight years, jumping from the Bellagio to the MGM Grand to the Cosmopolitan. He resigned to become a full-time bridge player at the end of 2014. He also worked for BBO for the next four years, helping improve GIB and do cheating investigations.

Along with playing and teaching private lessons, Josh has co-written a book, written numerous columns, taught seminars, volunteered on several committees, and regularly gives free lectures at regionals.