Gilkey is a surname. Notable people with the surname include:
Art Gilkey (1926–1953), American geologist and mountaineerBernard Gilkey (born 1966), former Major League Baseball playerBertha Gilkey (1949–2014), African-American activist of tenant management of public housing propertiesGarrett Gilkey (born 1990), American football offensive guardGordon Gilkey (1912–2000), American artist, educator, and promoter of the arts from OregonHelen Margaret Gilkey (1886–1972), pioneering mycologist and botanistHoward Gilkey (1890–1972), American landscape architect known for his civic works in Oakland, CaliforniaJohn Charles Gilkey, prolific book and document thiefJohn Gilkey, American actor, comedian, juggler and clownLangdon Brown Gilkey (1919–2004), American Protestant Ecumenical theologianPeter B. Gilkey (born 1946), American mathematician, working in differential geometry and global analysisRandy Gilkey (born 1976), American singer, songwriter, multi-instrumentalist, producer and recording engineerRichard Gilkey (1925–1997), American painter, often associated with the 'Northwest School' of artists