Wallner is a surname. It is common in Austria, on its own or in longer names, for example "Haubenwallner". Sometimes it is referred to as a variant of the German name "Waldner". Notable people with the surname include:
Anna Wallner (born 1969), Canadian television hostess
Fred Wallner, known for playing of American football
Hans Wallner
Johan Wallner (born 1965), Swedish skier
Manuel Wallner (born 1988), Austrian footballer
Mary Jane Wallner
Roman Wallner (born 1982), Austrian football player
Valentina Wallner (born 1990), Swedish ice hockey goaltender
