#1 Arsenal
13 FA Cup wins (1930, 1936, 1950, 1971, 1979, 1993, 1998, 2002, 2003, 2005, 2014, 2015, 2017)

Though Arsenal might be faltering in the league, having not won an EPL title for almost 15 years, in the FA Cup it is an entirely different ballgame.
The Gunners have triumphed in the Cup a total of 13 times (a national record), seven of which came under legendary former manager Arsene Wenger (which is also a national record for a manager).
The Emirates side ended an eight-year wait for a major trophy with their 2014 triumph over Hull City and that was the start of their recent dominance in the FA Cup, going on to win two of the next three editions.
The strength of their rivals in the EPL means that the Premier League might be a step too high for them to reach and as such just like their North London neighbours, the FA Cup might be their only realistic chance they have at domestic silverware hence do not be surprised to see them further extend their record-breaking number of triumphs in the FA Cup.