Hopea hainanensis

{{Short description|Species of tree}}

{{Speciesbox

|image =Hopea hainanensis at Taman Rekreasi Taman Sutera, Kajang 20230708 170131.jpg

|status = EN

|status_system = IUCN3.1

|status_ref = {{cite iucn |author=Ly, V. |author2=Nanthavong, K. |author3=Pooma, R. |author4=Hoang, V.S. |author5=Khou, E. |author6=Newman, M.F. |date=2018 |title=Hopea hainanensis |volume=2018 |page=e.T32357A2816074 |doi=10.2305/IUCN.UK.2018-1.RLTS.T32357A2816074.en |access-date=17 November 2021}}

|genus = Hopea

|species = hainanensis

|authority = Merr. & Chun

}}

Hopea hainanensis is a species of tree in the family Dipterocarpaceae. It is found in Hainan Island of China and northern Vietnam. Hopea hainanensis produces the acetylcholinesterase inhibitor Hopeahainol A.{{cite journal |last1=Ge |first1=Hui Ming |last2=Zhu |first2=Chun Hua |last3=Shi |first3=Da Hua |last4=Zhang |first4=Li Dong |last5=Xie |first5=Dai Qian |last6=Yang |first6=Jie |last7=Ng |first7=Seik Weng |last8=Tan |first8=Ren Xiang |title=Hopeahainol A: An Acetylcholinesterase Inhibitor from Hopea hainanensis |journal=Chemistry - A European Journal |date=January 2008 |volume=14 |issue=1 |pages=376–381 |doi=10.1002/chem.200700960}}