Holzer, also spelt Holczer, is a German and Ashkenazi Jewish surname. It may be a topographic surname meaning "forest dweller" or an occupational surname meaning "woodcutter" or "wood seller", or a toponymic surname for someone hailing from a place named Holz. Notable people include:Ádám Holczer, Hungarian footballer
Adi Holzer, Austrian artist
Ashley Holzer, Canadian equestrian
Charles Holzer, American equestrian
Charlotte Holzer (1909–1980), Jewish resistance fighter during World War II
Daniel Holzer, Czech footballer
Erika Holzer, American writer
Fabian Holzer, German badminton player
Friedl Kjellberg (1905–1993), Austrian-born Finnish ceramist
Georg Holzer, Austrian scholar of Slavic and Indo-European studies
Hans Holzer (1920–2009), Austrian-American author and parapsychologist
Harold Holzer, American historian
Harry J. Holzer, American economist, educator and analyst
Heinz Holzer, Italian alpine skier
Helmut Hölzer (1912–1996), German rocket engineer
Jacob Adolphus Holzer (1858–1938), American artist
Jane Holzer, American model and actress
Jenny Holzer, American artist
Jerzy Holzer (1930–2015), Polish historian
Joanie Holzer Schirm, American author, entrepreneur and activist
Johann Evangelist Holzer (1709–1740), Austrian-German painter
Josef "Sepp" Holzer, Austrian farmer, author and agricultural consultant
Korbinian Holzer, German ice hockey player
Kristine Holzer, American speed skater
Leo Holzer (1902–1989), Austrian-Czech firefighter and Holocaust survivor
Marc Holzer, American scholar and professor
Marcel Holzer, Austrian footballer
Marco Holzer, German racing driver
Marie Holzer (1874–1924), Austrian writer and journalist
Patrick Holzer, Italian alpine skier
Rachel Holzer (1899–1988), Australian theatre director and actress
Renzo Holzer, Swiss ice hockey player
Richard Holzer (1923–2021), Panamanian architect
Robert Holczer (1929–2017), Hungarian teacher and Holocaust survivor
Robert Holzer, German footballer and agent
Thomas Holzer, German racing driver
Werner Holzer (1937–2018), American wrestler