元旦快樂英語翻譯就是：Happy New Year。
元旦，即公歷的1月1日，是世界多數國家通稱的“新年”，所以元旦快樂就是新年快樂。
此外，用英語表達元旦快樂還可以參考以下的方式：?
1、Good luck, good health, hood cheer. I wish you a happy New Year.
祝好運、健康、佳肴伴妳度過壹個快樂新年。
2、With best wishes for a happy New Year.
祝新年快樂，並致以良好的祝福。
3、I hope you have a most happy and prosperous New Year.
謹祝新年快樂幸福，大吉大利。
4、With the compliments of the season.
祝賀佳節。
5、May the season's joy fill you all the year round.
願節日的愉快伴妳壹生。
6、Season's greetings and best wishes for the New Year.
祝福您，新年快樂。
7、Please accept my season's greetings.
請接受我節日的祝賀。
8、With very best wishes for your happiness in the New Year.
致以最良好的祝福，原妳新年快樂幸福。
9、Please accept our wishes for you and yours for a happy New Year.
請接受我們對妳及妳全家的美好祝福，祝妳們新年快樂。
10、May the coming New Year bring you joy, love and peace.
願新年為妳帶來快樂，友愛和寧靜。
11、Wishing you happiness during the holidays and throughout the New Year.
祝節日快樂，新年幸福。
12、A happy New Year to you.
恭賀新年。