•
Alfred Loomis (disambiguation), several people •
Andrew Loomis (1892–1959), illustrator •
Arphaxed Loomis (1798–1885), American politician •
Benjamin Franklin Loomis, (1857–1935), American photographer •
Bernard Loomis (1923–2006), American toy inventor/marketer •
Charles Battell Loomis (1861–1911), American author •
Chauncey Loomis (ca. 1783–1817), New York politician •
Chester Loomis (1789–1873), New York politician •
Clinton "Fear" Loomis (born 1988), professional Dota gamer •
David B. Loomis (1817–1897), American politician •
Dwight Loomis (1821–1903), American politician •
Eben Jenks Loomis (1828–1912), American astronomer •
Edward Eugene Loomis (1864–1937), president of the Lehigh Valley Railroad •
Elias Loomis (1811–1889), American mathematician •
Elisha Scott Loomis (1852–1940), American teacher, mathematician, genealogist, writer and engineer •
Evarts G. Loomis (1910–2003), American physician •
Francis Loomis (disambiguation), several people •
Frank Loomis (1896–1971), American athlete •
Frederic Brewster Loomis, American paleontologist •
Frederick Oscar Warren Loomis (1870–1937), Canadian major-general •
George B. Loomis (1833–1887), American music teacher •
Gustavus Loomis (1789–1872), American soldier •
Hamilton Loomis (born 1975), American blues guitarist, singer, songwriter, and record producer •
Harold F. Loomis (1896–1972), American botanist and millipede taxonomist •
Harvey Worthington Loomis (1865–1930), American composer •
Henry Loomis (1919–2008), American businessman •
James H. Loomis (1823–1914), New York politician •
Jeff Loomis (born 1971), guitarist •
John Mason Loomis (1825–1900), American businessman •
John Q. Loomis (c. 1824–1869), Confederate Army officer •
Jon Loomis (born 1959), American writer •
Laura Hibbard Loomis (1883–1960), American literary scholar •
Louise Ropes Loomis (1874–1958), American historian •
Lynn Harold Loomis (1915–1994), American mathematician •
Mabel Loomis Todd (1856–1932), born Mabel Loomis, American writer •
Mahlon Loomis (1826–1886), American inventor, pioneer of radio telegraphy, said to have invented the wireless radio •
Mickey Loomis, General Manager of the New Orleans Saints football franchise • Nancy Loomis, stage name of American actress
Nancy Kyes (born 1949) •
Noel Loomis (1905–1969), American writer of fiction and history •
Orland Steen Loomis (1893–1942), Governor-elect of Wisconsin •
Rick Loomis, American game designer •
Rick Loomis (photojournalist) (born 1969), American photojournalist •
Robbie Loomis (born 1964), American NASCAR crew chief •
Robert Loomis (1926–2020), American editor •
Roger Sherman Loomis (1887–1966), American scholar of medieval and Arthurian literature •
Roland Loomis (1930–2018), father of the modern primitive movement •
Samuel Loomis (disambiguation), several people •
Silas Laurence Loomis (1822–1896), American scientist and educator •
Stanley Loomis, American writer of French history ==Fictional characters==