TJ, 2nd gen. Wranglers (97-06) were TJs, 1st gen. Wranglers (87-95) were YJs, the 3rd gen (07-current) Wrangler is the JK.
Originally Posted by dmill89
Jeep Model designations:
XJ: 84-01 "Regular" (not Grand) Cherokees.
SJ/FSJ: "Full Sized Jeeps" Wagoneer (pre-84), Grand Wagoneer, Cherokee (pre-84), J-Series trucks
YJ: 87-95 Wrangler (1st gen)
TJ: 97-06 Wrangler (2nd gen)
JK: 07+ Wrangler (3rd gen)
ZJ: 93-98 Grand Cherokee (1st gen)
WJ: 99-04 Grand Cherokee (2nd gen)
WK: 05-10 Grand Cherokee (3rd gen)
WK2: 11+ Grand Cherokee (4th gen)
KJ: 02-07 Liberty (1st gen)
KK: 08-13 Liberty (2nd gen)
MJ: Comanche (an XJ Cherokee based pickup)
CJ: "Civilian Jeep" pre-wrangler "Jeep Jeeps".
KL: The "new" 2014 Cherokee