韓國生日歌的歌詞如下：
祝你生日快樂，祝你生日快樂，
Happy birthday to you.
願你永遠平安，幸福健康長伴你左右，
May you always be safe, healthy and happy.
祝你生日快樂，祝你生日快樂，
Happy birthday to you.
願你的夢想成真，一切順利，
May all your dreams come true and all your wishes come true.
生日快樂，願你的人生充滿歡笑和愛意，
Happy birthday, may your life be filled with laughter and love.
祝你生日快樂！
Happy birthday to you!