Antai-ji (安泰寺^?) is a Buddhist temple that belongs to the Sōtō school of Zen Buddhism. It is located in the town of Shin'onsen, Mikata District, in northern Hyōgo Prefecture, Japan, where it sits on about 50 hectares of land in the mountains, close to a national park on the Sea of Japan. It accepts visitors in the summer months, but is inaccessible during the winter.

Antai-ji was founded in 1923 by Oka Sotan as a monastery for scholars to study the Shōbōgenzō. At that time, it was located in northern Kyoto and many leading scholars studied there. Vacated during World War II, Sawaki Kodo (1880-1965) and Kosho Uchiyama (1912-1998) moved into Antai-ji in 1949, and made it a place for Zazen. During the late sixties, the name of this small temple became known both in Japan and abroad for its practice of Zazen and formal begging.

The increase of visitors and the many new houses being built around the temple created much noise, which made it difficult for the practice of Zazen to continue at the Kyoto location. Therefore the following abbot, Watanabe Koho (b. 1942), decided to move Antai-ji to its present location in northern Hyōgo. Together with the quietude of the mountains, he was looking for a new life style that would bring Zen back to self-sufficiency. The former abbot Miyaura Shinyu (1948–2002) protected this quiet life of Zazen while putting the ideal of a self-sufficient monastery into practice, until his sudden death in the snow in February 2002. His disciple, the German monk Muho Noelke (b. 1968), continues as the present abbot.

Muhō Nölke (ネルケ無方^?) (born 1968) is a German Zen master. Presently, he is the abbot of Antai-ji, a Japanese Soto Zen temple. He has translated works of Dōgen and Kōdō Sawaki, and has authored two books of his own.

At age 16, Muhō was introduced to zazen by one of his high school teachers and soon had the wish to become a Zen monk. To prepare for his stay in Japan, he studied Japanese at the university in Berlin, along with philosophy and physics. During his studies, he spent one year at Kyoto University and learned for the first time about Antai-ji. At age 22, he spent six months there as a lay practitioner.

Three years later, after graduating from university, Muhō was ordained as a Sōtō Zen monk under the abbot Miyaura Shinyu Rōshi. Apart from Antai-ji, he has trained for one year at the Rinzai monastery Tōfuku-ji in Kyoto, and one year at Hosshin-ji in Obama, Fukui.

After obtaining the transmission of dharma (shihō) from his teacher Miyaura Rōshi, Muhō decided to live as a homeless monk in a park in central Osaka, where he led a zazen group in 2001.