Pascoag (PASS-ko or PASS-kog[5]) is a census-designated place (CDP) and village in Providence County, Rhode Island, United States.

The 2020 United States census counted 4,641 people, 1,811 households, and 1,189 families in Pascoag.

The Nipmuc word for snake was rendered "askug" by Roger Williams in his A Key Into the Language of America, and "askoog" by the Reverend John Eliot in his Algonquian translation of the Bible.

Pascoag can trace its origins back to the first half of the 18th century, when a saw mill and other businesses were built in what is now the village center.

In the 19th century, Pascoag became a textile manufacturing town, an industry that continued until after World War II.

[19] This was the first public statement concerning the presence of MTBE in Pascoag drinking water, though residents claim to have detected it as early as May 2001.

It is believed to have come from leaking tanks at a local ExxonMobil gas station.

As the situation was resolved over the following months, nearly 1,500 residents of Pascoag responded by filing a lawsuit against ExxonMobil through the law offices of Napoli, Kaiser, and Bern and Houston attorney Armistead Easterby.