Samuel Colin Walker (born 2 October 1991) is an English professional footballer who plays as a goalkeeper for Kilmarnock.
Walker progressed through the youth ranks at Millwall and Chelsea, although he failed to make an appearance for either club. He was loaned from Chelsea to Barnet, Northampton Town, Yeovil Town, Bristol Rovers and Colchester United on two occasions. He made his move to Colchester permanent in January 2014. He made over 200 appearances in total for Colchester.
Manchester City 
Everton 
Chelsea 
Fulham 
Nottingham Forest 
Tottenham 
Celtic 
Motherwell 
Wolverhampton 
Manchester Utd 
ST Mirren 
Rangers 
Sampdoria 
Carrarese 
Liverpool 
Leicester 
Arsenal 
Ipswich 
Cagliari 
Inter 
Lazio 
Atalanta 
FC Porto 
Boavista 
Udinese 
Torino 
Napoli 
Venezia 
ST Johnstone 
Juventus 
Fiorentina 
West Ham 
Pisa 
AC Milan 
Roma 
Sporting CP 
Benfica 
Newcastle 
Brentford 
Nacional