Bí-chiu Kok-ka Cho͘-chit (Eng-bûn: Organization of American States, OAS, tī i lēng-goā 3 ê koaⁿ-hong gí-giân, sī kán-séng chò OEA) sī 1 ê chóng-pō͘ tī Washington, D.C. ê kok-chè cho͘-chit. 35 ê Bí-chiu kok-ka lóng sī i ê hoē-oân kok.