List of geological features on Titan
Montes

Mons
Coordinates
Named after
Angmar Montes
10°00′S 221°00′W / 10.0°S 221.0°W
Mountains of Angmar
Dolmed Montes
11°36′S 216°48′W / 11.6°S 216.8°W
Mount Dolmed
Doom Mons
14°39′S 40°25′W / 14.65°S 40.42°W
Mount Doom
Echoriat Montes
7°24′S 213°48′W / 7.4°S 213.8°W
Echoriath
Erebor Mons
4°58′S 36°14′W / 4.97°S 36.23°W
Erebor, the Lonely Mountain
Gram Montes
9°54′S 207°54′W / 9.9°S 207.9°W
Mount Gram
Irensaga Montes
5°41′S 212°43′W / 5.68°S 212.71°W
Irensaga
Merlock Montes
8°54′S 211°48′W / 8.9°S 211.8°W
Merlock Mountains
Mindolluin Montes
3°18′S 208°58′W / 3.3°S 208.96°W
Mindolluin
Misty Montes
56°48′N 62°26′W / 56.8°N 62.44°W
Misty Mountains
Mithrim Montes
2°10′S 127°25′W / 2.16°S 127.42°W
Mountains of Mithrim
Moria Montes
15°06′N 190°30′W / 15.1°N 190.5°W
Mountains of Moria
Rerir Montes
4°48′S 212°06′W / 4.8°S 212.1°W
Mount Rerir
Taniquetil Montes
3°40′S 213°16′W / 3.67°S 213.26°W
Taniquetil

Question: What Titanean mountains have names that are refences to Tolkien's works?
Answer: Titanean mountains named after Tolkien's works include Erebor Mons, the Irensaga Montes, Mindolluin Montes, Misty Montes, Mithrim Montes and Taniquetil Montes.