Ong namo guru dev namo (Sanskrit: ॐ नमो गुरु देव् नमो) is an important mantra used often in Kundalini yoga. This mantra means “I bow, or salutations to the divine teacher.” It can also be viewed as meaning, " bow to the teacher within." It is also sometimes called the Adi mantra.

This mantra is usually chanted three times at the beginning of a Kundalini yoga practice or class. Ong namo guru dev namo is considered a high vibration, protective mantra as it is believed to help the yogi to connect with the power and insights of the community of Kundalini yoga students and teachers as a whole. This connection with wider power is referred to by the Kundalini community as the "golden chain."

This mantra is in Sukhmani Sahib, which was written by Guru Arjan Dev Ji. It is a mantra of protection and is recited to invoke the protective energy of the universe.  Siri Singh Sahib, Yogi Bhajan taught that this mantra should always be chanted 3 times in a row.  This mantra is also chanted directly following the Adi Mantra, when tuning in to a Kundalini Yoga class.

Aad Guray Nameh
Jugaad Guray Nameh
Sat Guray Nameh
Siri Guroo Dayvay Nameh

I bow to the Primal Wisdom
I bow to the Wisdom of all the ages
I bow to the True Wisdom
I bow to the Great Invisible Wisdom

When you cannot be protected, this mantra shall protect you. When things stop, and won’t move, this makes them move in your direction.