List of world number one male golfers

The following is a list of golfers who have been top of the Official World Golf Ranking. As of May 16, 2021, Dustin Johnson is the number one ranked golfer.
Tiger Woods has spent the most consecutive weeks (281) and most total weeks (683) at the top of the rankings, and Tom Lehman the fewest total weeks, having spent just a single week at the top in April 1997. Three golfers have spent an entire calendar year atop the rankings: Nick Faldo (1993), Greg Norman (1996), and Woods (2000, 2001, 2002, 2003, 2006, 2007, 2008, 2009).
Earlier number ones.
Before the start of the Official World Golf Ranking in 1986, unofficial end of year world golf rankings were published by Mark McCormack in his "World of Professional Golf" annual from 1968 to 1985. McCormack's rankings listed Jack Nicklaus as the number one from 1968 to 1977, Tom Watson from 1978 to 1982 and Seve Ballesteros from 1983 to 1985.