Greenslade is a surname. Notable people with the surname include:
Arthur Greenslade (1923–2003), British conductor and composer Charles Greenslade (1843-1917), co-founder and maltster of Speight's brewery, Dunedin, New Zealand Dave Greenslade (1943-2026), English keyboardist Des Greenslade (1933-2021), Welsh rugby player Edwin Greenslade Murphy (1866-1939), Australian writer Ella Greenslade (born 1997), New Zealand rower Ellison Greenslade (born 1961), Bahamian police officer Francis Greenslade (born 1962), Australian actor Henry Greenslade (1867–1945), New Zealand politician John Greenslade (1880–1950), United States Navy admiral John Webber Greenslade (c. 1935), former Mayor of Grey, New Zealand Kathryn Greenslade (born 1998), British swimmer Malcolm Greenslade (born 1948), Australian rules footballer Roy Greenslade (born 1946), English journalism academic Sidney Greenslade (1867–1955), English architect Stanley Lawrence Greenslade (1905-1977), English theologian Tosh Greenslade, Australian actor (part of seven-member cast of Shaun Micallef's Mad as Hell along with Francis Greenslade, however the pair are unrelated) Wallace Greenslade (1912–1961), British radio announcer and newsreader