[4] Following the takeover of Watford by the Pozzo family, Watford loaned a significant number of players on season-long deals from fellow Pozzo-owned clubs Udinese and Granada.

[5] The use of a large number of loan players drew criticism from fellow managers,[6] who argued that a large number of loan players from a few clubs should not be allowed.

= Squad number Pos = Playing position P = Number of games played G = Number of goals scored = Yellow cards GK = Goalkeeper DF = Defender MF = Midfielder FW = Forward = Red cards Yth = Whether player went through Watford's youth system Joined club = Year that player became a Watford first team player[a] Age = Current age Left club during 2013–14 † Loan player

[10] Numbers in brackets indicate substitute appearances updates as 20 September 2013 At the end of the 2012–13 season, the club announced that seven players would be released at the end of their contracts, alongside Chris Iwelumo, who had already agreed to join Scunthorpe United.

[21] updates as 20 September 2013 On 14 August 2013, Cristian Battocchio made his Italian Under-21 debut in a 4–1 friendly win over Slovakia.