S
WInternational Tennis Hall of Fame
WAsian Tennis FederationA
WCentral American & Caribbean Tennis Confederation
WConfederation of African TennisB
WInternational Premier Tennis League
WInternational Tennis Integrity AgencyC
WList of real tennis organizations
WOceania Tennis FederationD
WPenn Racquet Sports
WSouth America Tennis ConfederationE
WTennis Europe
WTennis WalesF
WWorld TeamTennis
WYugoslav Tennis Association