Olcott is a hamlet (and census-designated place) located in the Town of Newfane in Niagara County, New York, United States 14126. As of the 2010 census, this community population was 1,241. Most locals refer to it as Olcott Beach. It is part of the Buffalo–Niagara Falls Metropolitan Statistical Area.

Olcott is a lakeside community which is home to the deepest harbor on Lake Ontario west of Rochester, NY. The community is at the junction of East/West Lake Road (NYS Route 18) and Lockport-Olcott Road (NYS Route 78).

Krull Park in the northeast part of the village, is the largest county-operated park in Niagara County.
Olcott-Newfane Airport (D80) is located south of the village, but is closed indefinitely except for ultralight aircraft.

Olcott was known for its Coney Island-like beach attractions and attracted tourists visiting nearby Niagara Falls, New York. Many of these attractions have closed, however, after the decline of the City of Niagara Falls and a prolonged economic downturn which has hard-hit all of Niagara County. Slowly, efforts are being made to bring back this economic prosperity that the region once saw, and so far has been a success in Olcott. Heritage tourism has become quite popular in Niagara County, and new festivals include the Olcott Pirate Festival as well as a famous car show that takes place during the summer.

In 2012, Olcott Beach won the prestigious title of Ultimate Fishing Town in a contest sponsored by The World Fishing Network (WFN). Olcott Beach enjoys a superior reputation as a world-class fishing destination by sportsmen and hobbyists alike. The U.S. prize was awarded to Olcott Beach, and the Canadian prize was awarded to Hastings, Ontario, both located by the shores of Lake Ontario.