Johannes Bruno Ertl, known as Johnny Ertl (born 13 November 1982) is an Austrian former footballer who primarily played as a defensive midfielder, although he could also play at the right or centre of defence.
During his career, Ertl notably represented Sturm Graz, Crystal Palace, Sheffield United and Portsmouth; after retiring from playing in 2015, he became the spokesman of the Portsmouth F.C.
supporters' trust, also taking on a role as the assistant coach of the Portsmouth under-16s.