Since her marriage to the Duke of Cambridge in April 2011
As of Jan 2019, the Duchess of Cambridge has appeared in public 75 times in regards to Sports.

June 27, 2011 - Kate begins Royal Sport Watching career.  
 All England Lawn Tennis and Croquet Club


Royal Sports Patron
All England Lawn Tennis and Croquet Club - 2017
Lawn Tennis Association - 2017
1851 Trust - 2014
Sports Aid - 2013

Public Appearances


2018 (9)
King Power Stadium/Nov
Coach Core Essex/Oct
Wimbledon Men's Final/July 
Wimbledon Women's Final/July
Polo/June*
Houghton Horse Trials/May*
Holmenkollen Ski Jump in Norway/Jan
Bandy Hockey in Sweden/Jan
Wimbledon Junior Tennis Initiative/Jan

2017 (7)
8 Man Rowing Race against William on River Necker, Germany/July
Wimbledon Men's Final/July
Wimbledon Opening Day/July
Royal Ascot*/June
Land Rover BAR Roadshow/June
London Marathon/April
Six Nations Rugby- Paris, France/March

2016 (11)
Volleyball - University of British Columbia, Okanagan, Canada/Sept
Americas Cup World Series/July
Tennis - Wimbledon Finals*/July
Tennis - Wimbledon Semi-Finals*/July
Royal Ascot*/June
Sports Aid Anniversary Dinner/June
Houghton Hall Horse Trials* - 2 days/May
Sailing - 1851 Trust in Portsmouth/May
Bhutan - Bhutan National Stadium/April
India - Mumbai, Oval Maiden/April
Edinburg - Tennis on the Road workshop/Feb

2015 (8)
Rugby World Cup Australia vs Wales/Oct*
Rugby World Cup England vs Wales/Sept*
Rugby World Cup Opening Ceremony/Sept
America's Cup World Series in Portsmouth/July
Tennis - Wimbledon Quarterfinals*
Polo/June*
Sailing - 1851 Trust in Portsmouth/Feb
Kensington Leisure Center

2014 (15)
Basketball in New York City
GSK Sports Performance Lab
Rugby in Cardiff
Tour de France in Leeds
Commonwealth Games in Glasgow
Home Nation House mentoring session
Commonwealth Games in Glasgow
Tennis - Wimbledon Finals
Tennis - Wimbledon Murray Match
Polo Match/June*
Rugby in Australia*
Cricket World Cup in New Zealand
Rippa Rugby Tournament in New Zealand
Velodrome opening in New Zealand
Sailing in New Zealand

2013 (5)
SportsAid Sports Ball
SportsAid workshop
Ring of Fire Marathon in Anglesey
Emirates Arena Tour
Cheltenham Festival*

2012 (15)
BBC Sports Awards
Field Hockey at St. Andrews
Rugby in Cardiff
GB Team Reception
Paralympic Reception
Olympic Closing Ceremonies
Olympic – 4 days of events*
Olympic Opening Ceremonies
Olympic Torch at Buckingham Palace
Bacon’s College for Coach Core program
Visit to Olympic Park
Tennis - Wimbledon Finals*
Tennis - Wimbledon Quarterfinals*
Polo Match/June*
Polo Match/May*

2011 (5)
Polo in Santa Barbara
Rodeo in Calgary
Street Hockey in Yellowknife
Dragon Boat Race in Prince Edward Island
Tennis - Wimbledon*

*Denotes not an "official" engagement