1899–1900 Newcastle United F.C. season

The 1899–1900 season was Newcastle United's second season in the Football League First Division, the top flight of English football at the time. Newcastle finished the season in 5th place.

League

 * The match against Glossop on 1 January was abandoned and replayed on 14 March.

FA Cup

 * The match against Southampton on 10 February was abandoned after 55 minutes due to a heavy snowstorm.