Gunnar Nielsen (born 7 October 1986) is a Faroese professional footballer who plays as a goalkeeper for Icelandic club FH. Nielsen has also represented HB, Boldklubben Frem, Gøtu Ítróttarfelag, Blackburn Rovers, Manchester City, Wrexham, Tranmere Rovers, Silkeborg, Motherwell, Stjarnan and the Faroe Islands national football team at all age levels.