Caddell is a surname. Notable people with the surname include:
James Caddell (1794–1826), New Zealand Pākehā Māori, sealer and interpreterJason Caddell, guitarist in The Dismemberment Plan, a Washington D.C. based indie rock bandJohn A. Caddell (1910–2006), American lawyer in the state of AlabamaJohn B. Caddell, formerly YO-140, is a 712 gross register tonnage, 185-foot, previously United States-flagged water tankerPatrick Caddell (born 1950), American public opinion pollster and a political film consultantShirley Caddell (1931–2010), American country music and rockabilly singer, yodeller, guitarist and songwriterTrevor Caddell (born 1993), American professional wrestler, better known by the ring name Trevor LeeWalter Caddell (1879-1944), British military officer