Encore Theater At Wynn Las Vegas, also called Encore Las Vegas, is a luxury resort and casino on the Las Vegas Strip in Paradise, Nevada. It opened for the public on December 22, 2008, and is under Wynn Resorts' ownership. The architecture of the building is done by Wimberly Allison Tong & Goo and Michael Hong. Encore underwent renovations in 2010 and 2015 on the theme of Life Imitating Art.

Encore Theater At Wynn Las Vegas is connected to its sister resort, Wynn Las Vegas. Both venues are located on the site of the old Desert Inn Resort. The resort also includes Wynn Plaza, a 76,000 square feet retail space. The venue is well-known for holding more Forbes Travel Guide Five-Star awards than any other casino and resort worldwide. In 2020, Encore was named the second-largest and largest FTG Five-Star resort across the globe.

Encore has also been honored with the AAA Five Diamond Award every year since its inception. The Spa and the Tower Suites at Encore have received the Forbes Travel Guide five-star aw, making it the world's seventh-largest hotel. The resort includes an Encore Beach Club and XS Nightclub, which is the visitors' signature attraction. Sinatra and Wazuzu are the most notable restaurants at the Encore Theater At Wynn Las Vegas.