"'t Is OK" (English translation: "It's OK") was the Dutch entry in the Eurovision Song Contest 1978, performed in Dutch by the trio Harmony. The song was composed by Eddy Ouwens, who previously had written the Netherlands' winning entry at the 1975 Contest, Teach-In's "Ding-A-Dong". "'t Is OK" charted at #29 in the Dutch singles chart in the same year.