Marcus
- Cantharidae
- Dobârlău
- Marcos (disambiguation)
- Marcus (album)
- Marcus (comedian)
- Marcus (name)
- Marcus (praenomen)
- Marcus Amphitheater
- Marcus Center
- Marcus Island
- Marcus Township, Cherokee County, Iowa
- Marcus by Goldman Sachs
- Marcus, Illinois
- Marcus, Iowa
- Marcus, South Dakota
- Marcus, Washington
- Marques (disambiguation)
- Mărcuș River
- Neiman Marcus
- USS Marcus