Raj Yoga is a term used in Hindu astrology and Vedic astrology to describe a combination of planets that can bring great fortune and success. The word "Raj" means "King," which can also be interpreted as fame, prosperity, wealth, reputation, and fulfillment of desires in ones life. Raj Yoga is believed to give success, a grand rise in career or business, and a greater degree of financial prosperity, particularly during the dasha of the planets that give rise to it).

There are different types of Raj Yogas, and they are formed by the combination of auspicious planets in a Kundli. Astrology says that the Moon, in its various placements, has a significant impact upon Yoga. If the Trine or Kendra Houses have the aspect of Venus or Jupiter, then Raj Yoga in Kundli gives its full results, and the native gets power and position, which can be compared with that of the king.

In addition to the astrological meaning, Raj Yoga is also a term used in yoga philosophy. Raja Yoga is viewed as the supreme or "royal path" to attaining the state of unity of mind-body-spirit. It is a systematic approach that has been practiced for thousands of years by yogis who have attained great levels of spiritual awareness. The practice of Raja Yoga was compiled by the sage Patanjali in his famous Yoga Sutras during the second century CE. The Sutras break down the practice of yogic meditation into eight limbs or sub-practices.