Suixi County (postal: Suikai; ; Suixi Yue: [ìui<sup>22</sup> kðÃÂi<sup>55</sup><nowiki>]</nowiki>) is a county in the southwest of Guangdong province, China. It is under the administration of the prefecture-level city of Zhanjiang and is located at the northern end of the Leizhou Peninsula, bordering the Gulf of Tonkin to the west.