Semper fidelis is a Latin phrase that means "always faithful" – it serves globally as a common motto for several military units.
Semper fidelis may also refer to:
Semper Fidelis (march), John Philip Sousa march Semper Fidelis, an album by German black metal band Nargaroth Semper Fidelis, first mission in the first-person shooter video game Battlefield 3 Semper Fidelis Marine Corps, rename of computer game Söldner: Secret Wars
Television "Semper Fidelis" (Daredevil) "Semper Fidelis", 1989 season 4 Growing Pains episode "Semper Fidelis" (Jericho episode), 2007 season 1 television episode "Semper Fidelis" (NCIS), 2008 season 6 television episode "Semper Fidelis", 1959 season 1 New York Confidential episode "Semper Fidelis", 1979 season 4 Quincy, M.E. episode
See also Semper fi (disambiguation)