Knoll is a surname. Notable people with the surname include:
Albert Knoll (1796–1863), Austrian theologian
Andrew H. Knoll (born 1951), Harvard University professor and paleontologist
Catherine Baker Knoll (1930–2008), American politician and 30th Lieutenant Governor of Pennsylvania
Corina Knoll, American journalist
Christoph Knoll (1563–1630), German theologian and hymn writer
Erwin Knoll (1931–1994), American journalist
Florence Knoll (born 1917), American architect and furniture designer
Hans Knoll (1914–1955), German-American co-founder of the Knoll company (see below); husband of Florence Knoll
Hans Knöll (1913–1978), German physician and microbiologist
Jessica Knoll, American author of Luckiest Girl Alive
Johanna Knoll, German rower
Jeannette Knoll (born 1943), member of the Louisiana Supreme Court since 1997
John Knoll (born 1962), co-writer of the program Adobe Photoshop and visual effects supervisor at Industrial Light & Magic
József Knoll, drug researcher who developed selegiline
Konrad Knoll (1829–1899), German sculptor
Marvin Knoll (born 1990), German footballer
Max Knoll (1897–1969), German electrical engineer, inventor and professor
Mike Knoll (born 1951), American collegiate football coach
Silke-Beate Knoll (born 1967), German sprinter
Thomas Knoll, co-writer of Adobe Photoshop and brother of John Knoll
Xenia Knoll (born 1992), Swiss tennis player
