Leask may refer to:
Places Leask, Saskatchewan, a village in Canada Rural Municipality of Leask No. 464, in Canada Leask Airport, adjacent to the Canadian village Leask Bay, New Zealand
People Clan Leask, a Lowland Scottish clan Ada Leask (1899–1987), Irish historian and antiquary Arthur Leask (1880–1967), Spanish footballer Derek Leask (born 1948), New Zealand diplomat Devyn Leask (born 1999), Zimbabwean swimmer Edward Leask (born 1947), British sailor Harold G. Leask (1882–1964), Irish architectural historian and archaeologist Harry Leask (born 1995), British rower Henry Leask (1913–2004), British Army officer Julie Leask, Australian social scientist Kenneth Leask (1896–1974), British officer of the Royal Air Force Kristopher Leask, Scottish politician Laurie Leask (1912–1981), Australian rules footballer Lyndsey Leask (1935–2021), New Zealand softball player, coach and administrator Marilyn Leask (born 1950), Australian professor of education Michael Leask (born 1990), Scottish cricketer Nigel Leask (born 1958), British academic publisher Rob Leask (born 1971), Canadian-German ice hockey coach William Leask (1812–1884), Scottish dissenting minister and religious author William Keith Leask (1857–1925), Scottish writer and a classics lecturer John Leask Lumley (1930–2015), American professor of mechanical engineering and aerospace engineering
Other uses Leask v Commonwealth, a High Court of Australia case that discussed the role of proportionality in the Australian Constitution