Vijay Singh and Tiger Woods are tied for the most tournament wins in a season, with 9 tournament wins.

most pga tour wins in a season
2003-04Singh1999-00Woods2005-06Woods1998-99Woods2006-07Woods1979-80Watson2008-09Woods2004-05Woods1993-94Price2016-17Thomas2014-15Spieth2014-15Day2012-13Woods2002-03Woods2001-02Woods2000-01Woods2021-22Scheffler2020-21Cantlay2016-17Johnson2011-12McIlroy2007-08Woods2004-05Singh9988776665555555444444
NAMESEASONEVENTSWINSTOP 10SCORING AVGROUNDSGIR%FWY%DRIVING DISTANCE AVGPUTTING AVGSAND SAVE%SCRAMBLING %FEDEXCUP POINTSMONEY
Vijay SinghVijay Singh2003-0411291868.811473.060.4300.81.850.962.4$10,905,166
Tiger WoodsTiger Woods1999-008291767.88475.271.22981.757.367.1$9,188,321
Tiger WoodsTiger Woods2005-065581168.15674.260.7306.41.855.262.8$9,941,563
Tiger WoodsTiger Woods1998-998381668.47971.471.3293.11.856.863.6$6,616,585
Tiger WoodsTiger Woods2006-076371267.86471.059.8302.41.752.061.053,607$10,867,052
Tom WatsonTom Watson1979-8088716709269.365.526647.6$530,808
Tiger WoodsTiger Woods2008-096461468.16668.564.3298.41.761.968.24,000$10,508,163
Tiger WoodsTiger Woods2004-057661368.77869.954.6316.11.754.262.1$10,628,024
Nick PriceNick Price1993-94606869.46769.673.6277.51.858.263.6$1,499,927
Justin ThomasJustin Thomas2016-172551269.47967.255.1309.71.748.260.43,000$9,921,560
Jordan SpiethJordan Spieth2014-152551568.98867.962.9291.81.758.165.03,800$12,030,465
Jason DayJason Day2014-152051169.27270.855.9313.71.761.165.32,290$9,403,330
Tiger WoodsTiger Woods2012-13165868.96067.662.5293.21.760.860.04,352$8,553,439
Tiger WoodsTiger Woods2002-037451268.47268.662.7299.51.757.760.2$6,673,413
Tiger WoodsTiger Woods2001-026951368.67274.067.5293.31.858.069.7$6,912,625
Tiger WoodsTiger Woods2000-01765968.88471.965.5297.61.853.569.8$5,687,777
Scottie SchefflerScottie Scheffler2021-222541169.38872.360.0311.61.749.559.94,206$14,046,910
Patrick CantlayPatrick Cantlay2020-21244769.77870.260.7302.81.759.467.34,302$7,638,805
Dustin JohnsonDustin Johnson2016-17204869.57469.557.03151.844.362.81,720$8,732,193
Rory McIlroyRory McIlroy2011-126041068.94666.456.6310.11.756.260.22,827$8,047,952
Tiger WoodsTiger Woods2007-080462022,695$5,775,000
Vijay SinghVijay Singh2004-051114186910970.560.2301.11.857.464.2$8,017,336
Phil MickelsonPhil Mickelson2004-05814969.47866.958.73001.757.362.4$5,699,605
Davis Love IIIDavis Love III2002-038541169.48768.564.6299.21.852.759.6$6,081,896
Vijay SinghVijay Singh2002-0310641868.611069.563.4301.91.758.664.9$7,573,907
StatMuse has season-level data for tournament wins going back to the 1979-80 season.