Gundlach is a German surname. Notable people with the surname include:
- Ernst Gundlach (1834–1908), German-American inventor of optical instruments
- Franz Christian Gundlach, called F. C. Gundlach (1926–2021), German photographer, collector and curator
- Guy David Gundlach (1955–2011), American entrepreneur, business leader and film producer
- Herman Gundlach (1913–2005), American footballer
- Jacob Gundlach, in 1858 founder of the "Gundlach Bundschu Winery" in California
- Jeffrey Gundlach (born 1959), investment banker, founder of Doubleline Capital
- Jens Gundlach (born 1961), German experimental physicist
- Juan Gundlach (1810–1896), German-Cuban naturalist and taxonomist
- any of the several taxa named after Juan Gundlach, such as:
- Gundlach's hawk (Accipiter gundlachii)
- Gundlach's Caribbean toad - Bufo gundlachii
- Rudolf Gundlach (1892–1957), Polish engineer, inventor of the tank periscope
- Robert Gundlach (1926–2010), American physicist and inventor
- Willi Gundlach (1929-2025), German choral conductor and musicologist
See also
- Gundelach