Daular Khmer ta kasance daular Hindu - Buddhist a kudu maso gabashin Asiya, wacce ke kewaye da garuruwan ruwa a cikin arewacin Cambodia a yanzu.An san shi da Kambuja ta mazaunanta, ya girma daga tsohuwar wayewar Chenla kuma ya kasance daga 802 zuwa 1431. Daular Khmer ta yi mulki ko kuma ta mamaye mafi yawan yankin kudu maso gabashin Asiya ^[24] kuma ta kai har zuwa arewa har zuwa kudancin kasar Sin.^[25] A kololuwarta, Daular ta fi daular Byzantine girma, wacce ta wanzu kusan lokaci guda.^[26]An kafa farkon daular Khmer a shekara ta 802, lokacin da yariman Khmer Jayavarman II ya ayyana kansa chakravartin a tsaunukan Phnom Kulen.Ko da yake a al'adance an yi wa ƙarshen daular Khmer alama da faduwar Angkor zuwa Masarautar Siamese Ayutthaya a shekara ta 1431, har yanzu ana muhawara a tsakanin masana dalilan rugujewar daular.^[27] Masu bincike sun tabbatar da cewa wani lokaci da aka yi ruwan sama mai karfi ya biyo bayan mummunan fari a yankin, wanda ya haifar da lalacewa ga kayan aikin ruwa na daular.Bambance-bambance tsakanin fari da ambaliya shi ma matsala ce, wanda watakila ya sa mazauna yankin yin ƙaura zuwa kudu da kuma nesa da manyan biranen daular.^[28]