In Judaism, a ba'al teshuvah (Hebrew: בעל תשובה; for a woman, בעלת תשובה, ba'alat teshuva or ba'alas teshuva; plural, בעלי תשובה, ba'alei teshuva, 'owner of return [to God or his way]') is a Jew who adopts some form of traditional religious observance after having previously followed a secular lifestyle or a less frum form of Judaism.
The baal teshuva movement is a description of the return of secular Jews to religious Judaism. The term is used to refer to a worldwide phenomenon among the Jewish people.