Year 1900 (MCM) wis an exceptional common year stairtin on Monanday (airtin will display the full calendar) o the Gregorian calendar an a leap year stairtin on Setturday o the Julian calendar. As a result, the Julian calendar wis 12 days behind the Gregorian till Wadensday, Februar 28 (O.S. Februar 16) an haes been 13 days behind syne Fuirsday, Mairch 1 (O.S. Februar 17). It wis the 1900t year o the Anno Domini or the Common Era designation, the 900t year o the 2nt millennium, an the last year o the 19t century but the first year o the 1900s.

• Category:1900 births
• Category:1900 daiths
• Years o the XIXt an XXt Centuries