Eltopia (/ɛlˈtoʊpiːə/) is an unincorporated community in Franklin County, Washington, United States, located about 15 miles north of Pasco, along U.S. Route 395.

This arid area of south Franklin County was originally inhabited by Native Americans, who traded with Lewis and Clark when they passed through the Columbia Basin in 1805.

In the late 1870s settlement began in earnest in Ainsworth at the site of present-day Pasco.

[2] By 1902, there were enough settlers in the area that a town site was platted, but Eltopia has never been officially incorporated as a city.

When a storm washed away some work that had been done, a Cockney worker commented that, "There will be hell to pay".