Catherine Power (or variants) may refer to:

• Catherine Power (born 1985), Canadian wrestler
• Lady Catherine Power or Lady Catharine Power (died 1769), Irish noblewoman
• Cat Power, singer
• Katherine Ann Power (born 1949), US ex-convict and long-term fugitive
• Katherine Power, CEO and co-founder of Clique Brands

• Walter Simon (philanthropist)
• Walter-Simon-Platz
• Walter Simon (spy)
• Walter Singer
• Walter Sinnott-Armstrong
• Walter Sisulu National Botanic Garden
• Walter Sisulu Square
• Walter Sisulu Square of dedication
• Walters, John
• Walter S. Johnson Foundation
• Walter S. Judd
• Walter S Judd
• Walter Skidmore
• Walter Skinner (disambiguation)
• Walter Skinner (MP)
• Walter Slade
• Walter Slowakiewicz
• Walter S. Mason Jr.
• Walters, Michigan
• Walter's Mill
• Walter's Mill Bridge
• Walter Smishek
• Walter Smith (1836-1886)
• Walter Smith (American football)
• Walter Smith (art educator)