30th Division may refer to:
Infantry units 30th Division (1st Formation) (People's Republic of China), 1949–1952 30th Infantry Division (2nd Formation) (People's Republic of China) 30th Army Division (3rd Formation) (People's Republic of China) 30th Division (German Empire) 30th Bavarian Reserve Division, Germany 30th Infantry Division (Wehrmacht), Germany 30th Waffen Grenadier Division of the SS, Germany 30th Infantry Division "Sabauda", Kingdom of Italy 30th Division (Imperial Japanese Army) 30th Infantry Division (Poland) 30th Infantry Division (Russian Empire) 30th Guards Mechanized Division, Soviet Union 30th Guards Motor Rifle Division, Soviet Union 30th Guards Rifle Division, Soviet Union 30th Rifle Division, Soviet Union 30th Division (Syria), established 2017 Division 30, a 2015 Syrian rebel group 30th Division (United Kingdom) 30th Infantry Division (United States) 30th Division (Yugoslav Partisans), 1943–1945
Cavalry divisions 30th Cavalry Division, Soviet Union
Armoured units 30th Guards Tank Division, Soviet Union 30th Tank Division (Soviet Union) 30th Armored Division (United States)
Aviation divisions 30th Fighter Division, Luftwaffe, Germany 30th Air Division, United States
Navy divisions 30th Naval Surface Ships Division, Ukraine
See also List of military divisions by number 30th Army (disambiguation) XXX Corps (disambiguation) 30th Brigade (disambiguation) 30th Regiment (disambiguation) 30th Battalion (disambiguation) 30th Squadron (disambiguation)