Indo-Guyanese are mostly descendants of indentured labourers from India

India

India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

 who are citizens or nationals of Guyana

Guyana

Guyana , officially the Co-operative Republic of Guyana, previously the colony of British Guiana, is a sovereign state on the northern coast of South America that is culturally part of the Anglophone Caribbean. Guyana was a former colony of the Dutch and of the British...

. They are often referred to as Indians or East Indians. Indo-Guyanese are the largest ethnic group identified by the official census, making up 43.45% of the population in 2002.
On May 5, 1838, the year of the final slave emancipation in the British West Indies

British West Indies

The British West Indies was a term used to describe the islands in and around the Caribbean that were part of the British Empire The term was sometimes used to include British Honduras and British Guiana, even though these territories are not geographically part of the Caribbean...

 and the beginning of the indentured labor system, 396 Indian immigrants popularly known as the 'Gladstone Coolies' landed in British Guiana

British Guiana

British Guiana was the name of the British colony on the northern coast of South America, now the independent nation of Guyana.The area was originally settled by the Dutch at the start of the 17th century as the colonies of Essequibo, Demerara, and Berbice...

 (now Guyana) from Calcutta (now Kolkata

Kolkata

Kolkata , formerly known as Calcutta, is the capital of the Indian state of West Bengal. Located on the east bank of the Hooghly River, it was the commercial capital of East India...

).