Semper may refer to:
Mottos Semper caveo (Latin: Always beware), a motto of the polygraph testers of the US National Security Agency Semper fidelis (Latin: Always faithful), a motto used by, among others, the United States Marine Corps Semper fortis (Latin: Always courageous), an unofficial motto of the United States Navy Semper Gumby (Dog Latin: Always flexible), an unofficial motto of the USCG, USMC, USPHS, CAP, Emergency Management and more Semper maior (Latin: Always more, always greater), a motto of Ignatius of Loyola, the founder of the Jesuits Semper montani liberi (Latin: Mountaineers are always free), the West Virginia state motto Semper paratus (Latin: Always ready), the United States Coast Guard motto Semper primus (always first), a Latin phrase used as a motto by several United States and Israeli military units Semper supra (Latin: Always above), the official motto and march of the United States Space Force Semper vigilans (always vigilant), a Latin phrase used as a motto by the Civil Air Patrol, several military units, and the city of San Diego, California, U.S. Semper vigilo (Latin: Always vigilant or Always alert), motto of Police Scotland Sic semper tyrannis (Latin: Thus always to tyrants), motto of Virginia Quas dederis solas semper habebis opes (Latin: "What thou hast given alone shall be eternal riches unto thee"), motto of Queen Mary's Grammar School, England
People Carl Semper (1832–1893), German ethnologist and animal ecologist Colin Semper (1938–2022), Anglican priest Ene-Liis Semper (born 1969), Estonian video artist, performance artist, scenographer and theatre director Georg Semper (1837–1909), German entomologist Gottfried Semper (1803–1879), German architect, art critic, and professor of architecture Johannes Semper (1892–1970), Estonian writer and translator John Semper, American screenwriter, producer and story editor Manfred Semper, German architect of the second Dresden Opera House and son of Gottfried Semper Natalya Yevgenevna Semper (1911–1995), Soviet memoirist and Egyptologist Trevor Semper (born 1970), Montserratian cricketer
Other uses Semper (food brand), Swedish brand of infant food, a member of Hero Group "Semper I", 2011 episode of the psychological thriller TV series Homeland Semperoper, an opera house in Dresden, Germany Semper (Property Management System), Hotel Software company based in South Africa
See also Ea Semper, 1907 apostolic letter written by Pope Pius X Semper fi (disambiguation) Semper fidelis (disambiguation)