Blackler is a surname shared by several notable people:
Helen Blackler (1902–1981), British phycologist and museum curator Martha Hooper Blackler Kalopothakes (1830–1871), American Protestant missionary to Greece Phyl Blackler (1919–1975), New Zealand cricketer Stuart Blackler, English Anglican priest William Blackler (1827–1896), Australian horse breeder
See also Blacklers, a former department store in Liverpool, England