1st Division may refer to:

• 1st Division (Australia)
• 1st Canadian Division
• 1st Canadian Infantry Division
• 1st Commonwealth Division
• 1st Division (Colombia)
• 1st Division (Estonia)
• 1st Free French Division
• 1st SS Division Leibstandarte SS Adolf Hitler
• 1st Division (German Empire)
• 1st Mountain Division (Wehrmacht)
• 1st Mountain Division (Bundeswehr)
• German 1st Naval Infantry Division
• 1st Ski Division (Germany)
• 1st Infantry Division (Wehrmacht)
• 1st Infantry Division (Greece)
• 1st Division (Imperial Japanese Army)
• 1st Guards Division (Japan)
• Infantry Division 1 Kostrad
• 1 Alpine Division Taurinense
• 1st Blackshirt Division (23 March)
• 1 Mountain Infantry Division Superga
• 1st Division (North Korea)
• 1st Infantry Division (Philippines)
• Polish 1st Tadeusz Kosciuszko Infantry Division
• 1st Infantry Division (Romania)
• 1st Legions Infantry Division (Poland)
• 1st Grenadiers Division (Poland)
• 1st Infantry Division (South Africa)
• 1st Infantry Division (South Korea)
• 1st Rifle Division (Soviet Union)
• 1st Division (South Vietnam)
• 1st Ukrainian Division of the Ukrainian National Army
• 1st (African) Division
• 1st Infantry Division (United Kingdom)
• 1st Infantry Division (United States)
• 1st Marine Division (United States)

1. Division (I. Division, auch Division 1, engl. 1st Division, frz. 1ère Division) steht für:

• militärische Einheiten, siehe 1. Division (Militär)
• eine Spielklasse in verschiedenen Sportarten:

Eishockey:

• die zweithöchste Spielklasse im internationalen Eishockey, siehe Eishockey-Weltmeisterschaft
• Division 1 (Eishockey), die zweite französische Eishockeyliga
• Division 1 (NCAA), höchste Spielklasse in der National Collegiate Athletic Association

First Division (it. Prima Divisione) è il nome che ha contraddistinto, dal 1888 al 1992, la massima divisione del campionato di calcio dell’Inghilterra, corrispondente alla Serie A italiana. Dal 1992 al 2004 è stata la massima divisione della Lega calcio inglese nonché la seconda divisione d’Inghilterra dopo la Premier League.

De First Divison is de naam van de tweede divisie van de Schotse voetbalcompetitie. Er doen tien teams aan mee, en wie na 40 wedstrijden (4 speelrondes) bovenaan staat, promoveert naar de Scottish Premier League, en wordt vervangen door de degradant uit de Scottish Premier League. De club die laatste eindigt degradeert direct naar de Second Division. De nummer voorlaatst speelt met de nummer 2, 3 en 4 van de Second Division een Play-off om een plek in de First Division. De nummer 1 van de Second Division promoveert uiteraard gelijk naar de First Division.