Chey Chettha III

{{Infobox monarch

| name = Chey Chettha III

| title = King of Cambodia

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| succession = King of Cambodia

| reign = 1672–1673

| coronation =

| full name = Samdach Brhat Dharmasuriya Varman Padma Rajadhiraja Parama Bupati

| predecessor = Barom Reachea V

| successor = Preah Keo II

| spouse = Sri Thida Kshatriyi
Gama Kshatriyi
Preah Neang Devi Kshatryi

| issue =

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| father =Batom Reachea

| mother = Vararajini Kshatriyi

| birth_date = 1639

| birth_place =

| death_date = 1673

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Chey Chettha III ({{langx|km|ជ័យជេដ្ឋាទី៣}}; 1639–1673) or Batom Reachea II was a Cambodian king from 1672 to 1673.{{cn|date=June 2020}}

Chey Chettha III was the only son of Batom Reachea. In 1671, he became the son-in-law of his uncle, King Barom Reachea V, by marrying his eldest daughter, Princess Sri Thida Kshatriyi.{{cn|date=June 2020}} In December 1672, he murdered his father-in-law and seized the throne, and forced his cousin Bhagavatti Dav Kshatriyi (also the wife of his uncle Prince Ang Tan) to be his wife.{{cn|date=June 2020}}

Chey Chettha III was assassinated by the Chams and Malays in the employ of his wife, Gama Kshatriyi, just five months after his coronation, in April (or May) 1673.