The Quezon City Circle (QC Circle), officially Quezon Memorial Circle, is a national park situated in Quezon City, Philippines is a prominent landmark located within a large elliptical traffic circle bounded by the Elliptical Road. Serving as the main park of Quezon City, which was the official capital of the Philippines from 1948 to 1976, the park is renowned for its centerpiece: a 66-meter (217 ft) tall mausoleum. This monument enshrines the remains of Manuel L. Quezon, the second official President of the Philippines and the first president of an internationally recognized independent Philippines, alongside his wife, First Lady Aurora Quezon.

The Quezon Memorial Circle is also set to become a pivotal point in the Manila Metro Rail Transit System with the construction of the Quezon Memorial MRT station, which will be an underground facility on the approved MRT Line 7.

Locally referred to as the "Circle," the park has recently undergone substantial enhancements led by the local government to attract more visitors, both local and international. These beautification efforts have significantly boosted the number of visitors to the park.

Originally conceived as the site for the National Capitol in Quezon City, the Quezon Memorial circle was intended to house the Congress of the Philippines. This location was part of a broader plan for a National Government Center (NGC) encompassing Elliptical Road and the Quezon City Quadrangle, which includes the North, South, East, and West Triangles. The NGC aimed to consolidate the three branches of the Philippine government—legislative, executive, and judicial—into a single area. However, while the cornerstone was laid on November 15, 1940, construction halted due to the outbreak of World War II in the Philippines, leaving only the foundations completed.

In December 1945, following the end of World War II, President Sergio Osmeña issued Executive No. 79 to form the Quezon Memorial Committee. This committee was tasked with raising public funds to build a memorial in honor of his predecessor, President Manuel L. Quezon.

Former Quezon City Mayor Tomas Morato played a crucial role in selecting the memorial's site. Although President Elpidio Quirino later proposed relocating the monument, Morato strongly opposed this idea. His opposition led him to resign as the congressman representing the 2nd district of Quezon Province in 1949 over disputes with Quirino's plan.

In 1951, a national contest for the Quezon Memorial Project was held, with Filipino architect Federico Ilustre emerging as the winner. His design included not only the monument but also plans for a presidential library, a museum, and a theater.

The undeveloped grounds of Quezon Memorial Circle saw significant events, including a public mass celebrated by Pope Paul VI in 1970.