Arthur Ainslie (c. 1870s–1930s) was a respected British magician and writer whose clear, practical approach to conjuring made him a valued contributor to early 20th-century magic literature. Best known for Water Wizardry (1922) and A Pocketbook of Conjuring (1923), Ainslie focused on achievable, well-explained effects aimed at amateur and semi-professional performers. His work emphasized subtlety, presentation, and clarity—hallmarks that still resonate with magicians today.