Martis is a comune (municipality) in the Province of Sassari in the Italian region Sardinia.
Martis may also refer to:
People Eternity Martis (born 1993), Canadian author John Martis (born 1940), Scottish former professional footballer Liandro Martis (born 1995), Curaçaoan professional footballer who as a striker Nikolaos Martis (1915–2013), Greek author and politician Shairon Martis (born 1987), Dutch-Curaçaoan professional baseball pitcher Shelton Martis (born 1982), Curaçaoan footballer who plays as a defender Stefan Martis, fourth-highest scoring fighter ace from Slovakia during World War II
Other Marti's department store, Long Beach, California Martis people, now extinct Native American group Martis Valley, Martis Creek, Martis Lake, etc., a geographic feature in the western United States