| EBOSELE | Festy ....... , Republic of Ireland and Udinese winger; 2024-25 Watford loanee (7) |
| CAUSIO | Franco ___, 1972-1983 Italy, 1966-1968 and 1970-1981 Juventus and 1981-1984 Udinese winger; 1982 FIFA World Cup final winner (6) |
| CORNET | Maxwel, Ivory Coast, West Ham and 2021-22 Burnley winger; 2024-25 Southampton loanee (6) |
| MARKANDAY | Blackburn winger; 2024-25 Chesterfield loanee (5,9) |
| DILAN | Blackburn winger; 2024-25 Chesterfield loanee (5,9) |
| MAURI | Stefano ___ , former Italy, Lazio and Udinese midfielder signed by Brescia in 2017 (5) |
| OKOYE | Maduka ..... , Nigeria and Udinese goalkeeper (5) |
| KUCKA | Juraj ..... , Slovakia and 2019-22 Parma midfielder; 2021-22 Watford loanee (5) |
| CARRILLO | Andre , Peru and Corinthians midfielder; 2017-2018 Watford loanee from Benfica (8) |
| IBARBO | Victor , 2010-2015 Colombia attacker; 2015-2016 Watford loanee (6) |
| SUCCESS | 2017-2018 Nigeria, 2014-2016 Granada, 2016-2021 Watford and 2021-2024 Udinese forward (7) |
| ISAAC | 2017-2018 Nigeria, 2014-2016 Granada, 2016-2021 Watford and 2021-2024 Udinese forward (5) |
| PUSSETTO | Ignacio ........ , 2018-20 Udinese and 2020-23 Watford attacker (8) |
| ALMENABDI | 2008-09 Switzerland, 2010-13 Udinese and 2013-16 Watford midfielder (5,4) |
| LUCCA | Lorenzo ___, Italy, Udinese and 2021-2024 Pisa striker (5) |
| BALBO | Abel ..... , 1989-98 Argentina, 1989-93 Udinese and 1993-98 Roma striker; 1990, 1994 and 1998 World Cup participant (5) |
| BRUNO | Portugal, Manchester United, 2013-2016 Udinese, 2016-2017 Sampdoria and 2017-2020 Sporting Lisbon midfielder; 2024 FA Cup final winner (5,9) |
| FERNANDES | Portugal, Manchester United, 2013-2016 Udinese, 2016-2017 Sampdoria and 2017-2020 Sporting Lisbon midfielder; 2024 FA Cup final winner (5,9) |
| IGHALO | Odion ___, Nigerian striker who joined Watford from Udinese in 2014 |
| ISLA | Mauricio .... , Cagliari and Chile defender/ midfielder once at Udinese (4) |
