Sealand Kong-kok (Eng-gí: Principality of Sealand), it-poaⁿ hō Sealand, sī chi̍t-ê bî-kok-ka, chú-tiuⁿ tī Pak-hái ê hái-siōng phàu-tâi Roughs Tower chò léng-thó͘. Roughs Tower sī pha-hng ê hoán hui-hêng-ki hông-bū siat-si, só͘-chāi óa tī Eng-lân, lî Suffolk ê hái-kîⁿ 12 kong-lí hn̄g.