Deas is a Scottish surname. People with this surname include:
Bob Deas, (1886-?), Australian rules footballerSir David Deas (1807–1876), medical officer in the Royal NavyCharles Deas (1818–1867), American painterSir George Deas (1804–1887), Scottish judgeJack Deas (1875-?), Australian rules footballerJames Deas (1890–1963), New Zealand politicianJustin Deas (born 1948), American actorLynn Deas, American bridge playerPaul Deas (born 1972), retired Scottish professional footballerSir Edward Deas Thomson (1800–1879), Australian politicianZachariah C. Deas (1819–1882), brigadier general in the Confederate States Army during the American Civil War