There is no single "King of Mantra." The title is applied to different mantras depending on the tradition and context. Several mantras are referred to as the "king" within their respective spiritual practices.
Different "Kings of Mantra":
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Aum: Many yogis consider Aum the "king of mantras" or "supreme mantra," viewing it as a universal symbol for God, the sound of the universe, and the source of all sounds. [Reference: Many yogis have called Aum the 'king of mantras' or 'the 'supreme mantra'. It is revered as being the universal symbol for god, the sound of the universe, the sound of manifestation itself and the source of all sounds.02-Jul-2022]
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Seven-Syllable Mantra: In Tibetan Buddhism, a seven-syllable mantra is referred to as the "King of Mantra," originating with Naropa. [Reference: The seven-syllable KING OF MANTRA started with the great Naropa. When he chanted the precious mantra hundreds of thousands of times, he was prophesied of the… ]
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Gayatri Mantra: Within Hinduism, the Gayatri Mantra is sometimes considered the "king of all mantras," described as the mother of all Vedic mantras. [Reference: Why Gayatri Mantra is the king of all mantra?]
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Shurangama Mantra: In some Buddhist traditions, the Shurangama Mantra holds the title of "king of all mantras," due to its length and perceived importance. [Reference: “Shurangama Mantra” is considered to be the king of all mantras because it is the longest and the most important one.]
It's crucial to understand that the term "King of Mantra" is used metaphorically to emphasize the power and significance of a particular mantra within a specific spiritual tradition. There's no universally agreed-upon single mantra holding this title.
