Gyatso or Gyamco (Tibetan: རྒྱ་མཚོ, Wylie: rgya mtsho, ZYPY: Gyamco) is a Tibetan personal name meaning "ocean". It is also written Rgya-mtsho in Wylie transliteration, Gyaco in Tibetan Pinyin, Gyatsho in Tournadre Simplified Phonetic Transcription, and Gyatso in THDL Simplified Phonetic Transcription. In the Lhasa dialect it is pronounced [càtsʰo] or [càmtsʰo]. In accordance with the latter pronunciation, it can also be spelled "Gyamtso" in English.
Notable persons whose names include "Gyatso" include:
- Each Dalai Lama, other than the 1st, has had Gyatso as the second word of his personal name; for instance, the current Dalai Lama is named Tenzin Gyatso. See the list of Dalai Lamas;
- Chödrak Gyatso, the 7th Karmapa;
- Chögyam Trungpa (Chögyam is short for Chögyi Gyamtso), Buddhist teacher;
- Gyamco, village in Tibet
- Geshe Kelsang Gyatso, the founder of the New Kadampa Tradition (NKT);
- Khenpo Tsültrim Gyamtso, a Karma Kagyu lama;
- Palden Gyatso, a monk who served thirty-three years as a political prisoner
- Desi Sangye Gyatso, 17th century political figure
- Geshe Sherab Gyatso, 20th century Communist politician
- Thubten Gyatso, an Australian Gelug monk.
- Monk Gyatso, a character from the Nickelodeon cartoon Avatar: The Last Airbender.