Legacy and appraisal
Critical consensus of Mackendrick's body of work, both as a filmmaker and later as a teacher, has grown significantly over time. In his obituary, critic Anthony Lane compared him positively to both Alfred Hitchcock and Fritz Lang. Paul Cronin described him as "one of Britain's greatest film directors.... and one of the finest instructors of narrative cinema who ever lived."
Geoffrey O'Brien described Mackendrick as a "singularly elusive sort of auteur," whose films' "controlled surfaces and exquisitely lucid storylines a potential for chaos and violence swirls almost palpably. His reasonable and civilized art is profoundly in tune with instinctive forces that can manifest themselves as ecstatic celebration but also as tribal warfare or relentless perseverance in a private mission."
The British Film Institute's Screenonline profile of Mackendrick called him:
"a perfectionist in an industry devoted to profit.... But if the overall sense of Mackendrick's career is of great potential unfulfilled, his oeuvre, though small, is distinctive and always rewarding, the work of a visually acute filmmaker who thought in images and movement whilst always remaining in command of cinematic storytelling; a director whose films offer a complex and ambiguous mix of pessimism, callousness, mordant humour and startling empathy with the innocent and brutal world of the child."
The Harvard Film Archive wrote of Mackendrick during a 2009 retrospective:
"The full appreciation of Mackendrick's oeuvre as a whole—which only began in earnest during the 1970s—has accelerated since his death, a re-evaluation that has found his lesser-known and later films equally rewarding as his acknowledged masterpieces. This belated appreciation no doubt owes a debt to Mackendrick's classicism, his dedication to well-crafted, character-driven narratives that avoid baroque visual excess in favor of a subtler authorial stamp, the complex emotional and intergenerational dynamics that unite Mackendrick's films, be they funny, disturbing, moving or a heady combination of all three."
Film director Paul Thomas Anderson expressed admiration for Mackendrick's films, citing Sweet Smell of Success one of his favorites, showcasing its influence on Anderson's cinematic style. In a 1999 interview, Anderson advised aspiring filmmakers to watch all of Mackendrick's movies.
Mackendrick is the namesake of the Alexander Mackendrick Award for Best Director at the St. Andrews Film Festival.