The lay Buddhist ordination (Chinese: 受戒; pinyin: shòu jiè, Japanese: Jukai (受戒^?), Korean: sugye (수계) refers to the public ordination ceremony wherein a lay student of Zen Buddhism receives certain Buddhist precepts. The particulars of the ceremony differ widely by country and by school.

In Japan, the ritual is called jukai.

In the Sōtō school students take refuge in the Three Jewels (or Three Refuges), the Three Pure Precepts ("to do no evil, to do good, and to do good for others") and the Ten Grave Precepts. Students must undergo a period of study for their jukai ceremony.

According to the late Houn Jiyu-Kennett, "This is the most important set of ceremonies in the life of a [Zen Buddhist] layman [sic], and no person may become a [monastic] trainee unless he [sic] has undergone the week of training that these ceremonies occupy, either before his [sic] ordination or within a year of entering a training temple."

In South Korea, the ritual, called sugye (수계), involves formally taking refuge in The Three Jewels of Buddhism: the Buddha, the Dharma, and the Sangha, and accepting the five precepts. During the ritual, the initiate is touched with a burning incense stick. This is to leave a permanent mark which serves to remind the initiate of their promise to uphold the five precepts. During (or right after) the ceremony, the initiate is given a Buddhist name.