J1
J1, J01, J.I, J-I or J-1 may refer to:
J-I rocket, a Japanese solid rocket expendable launch vehicle
J1 type submarine, a WWII Imperial Japanese Navy cruiser submarines class
HMS J1, a WWI British submarine
J-1 visa, a type of U.S. visa for exchange visitors (e.g. students coming to the USA for an internship)
J-1 World Heavyweight Championship, a wrestling competition
AEG J.I, a World War I German ground attack aircraft
Albatros J.I, a 1917 German ground-attack single-engine biplane aircraft
ATC code J01 Antibacterials for systemic use, a subgroup of the Anatomical Therapeutic Chemical Classification System
DSER Class J1, a Dublin and South Eastern Railway Irish steam locomotive
Haplogroup J1 (Y-DNA), a Y-DNA haplogroup
Janko group J1 in mathematics
Junkers J 1, a 1916 German aircraft
Junkers J.I, a 1917 German aircraft
Lawrance J-1, an early 1920s engine used in American aircraft
LB&SCR J1 class, a British LB&SCR locomotive
PRR J1, an American PRR steam locomotive
S/2003 J 1, a former name for Eukelade, a retrograde irregular satellite of Jupiter
