Oriental Adventures (abbreviated OA[1]) is the title shared by two hardback rulebooks published for different versions of the Dungeons & Dragons (D&D) fantasy roleplaying game.

The original Oriental Adventures (ISBN 0-88038-099-3) was written by Gary Gygax, David "Zeb" Cook, and François Marcela-Froideval, and published in 1985 by TSR, Inc. as a 144-page hardcover for use with the Advanced Dungeons & Dragons (AD&D) 1st edition rules.

[5] The book presents new versions of the barbarian (here a warrior of the steppes, or a dweller of the forest or jungle) and monk, as well as new classes such as the ninja, kensai, wu-jen, and shukenja.

[3] The three new character races are the korobokuru (roughly equivalent to dwarves, without their tempers and greediness), the hengeyokai (intelligent animal beings that are able to shape-change into human form), and the spirit folk (humanoids whose life force is linked to the well-being of a specific location).

[5] The book draws on the history of China, Korea, and Japan, and includes information on families, clans, caste, and honor.

Oriental Adventures also introduced a new game mechanic to Dungeons & Dragons; it was the first official supplement to include rules for non-weapon proficiencies.

[6] Every character is expected to possess proficiencies in the noncombat arts with skills such as calligraphy, etiquette, animal handling, iaijutsu (fast draw), and bowyer.

[3] The original Oriental Adventures includes a lengthy section of background information for the fantasy setting known as Kara-Tur.

Gary Gygax intended to incorporate the material from Oriental Adventures into revised versions of the Players Handbook and Dungeon Masters Guide,[7] but left TSR shortly after announcing the project.

"[5] In the November 1986 edition of Asimov's Science Fiction, Matthew J. Costello noted that although based on AD&D, this product "aspires to more than supplemental status.

It contains a tremendous amount of information about bushi, samurai and ninja, not to mention the cultural and social background of the Orient."

"[10] In Issue 30 of the French games magazine Casus Belli , André Foussat warned "Playing AD&D in this new environment will require a major effort from the JDM (Japanese Dungeon Master) to integrate the entire rulebook (140 rather dense pages).

Swan concluded by giving the game an excellent rating of 3.5 out of 4, saying, "For experienced players, Oriental Adventures is a delight.

The cover art is by Raven Mimura, with interior art by: Matt Cavotta, Larry Dixon, Cris Dornaus, David Martin, Raven Mimura, Wayne Reynolds, Darrell Riche, Richard Sardinha, Brian Snoddy, and Arnie Swekel.