Osiyoi Sharqi, yak qismi Osiyo. ki dar arzhoi tropiki, subtropiki va mutadil (az 18° to 60° a. sh.) ba uqyonusi Orom hamshafat ast. Ba territoriyai Osiyoi Sharqi nohiyahoi sharqii Qismi osiyogii SSSR, qismi Khitoy (nohiyahoi shimoli sharqi va sharqi), Respublikai Khalqii Demokratii Koreya va Koreyai Janubi, Yaponiya dokhil meshavavd.
Relefi in joyhoro asosan kuhho va hamvorihoi kaloni akkumulyativi tashkil medihand. Iqlim mussoni Territoriyai Osiyoi Sharqiro az Janub ba Shimol avval beshahoi tropikiyu subtropikii mussoni va bad beshahoi pahnbargu omekhtai bargrez faro giriftaand.