Formosat-8 is a planned constellation of Taiwanese earth observation satellites. The Taiwan Space Agency expects to launch the first satellite in 2025.

The program builds off of Formosat-5, a remote imaging satellite which was launched in 2017.

In 2024 it was announced that the domestic parts would make up 80% of the satellites.

The Formosat-8 program was praised by Taiwanese President Lai Ching-te during a May 2025 visit to the program office.

The first launch was innitially planned for October, 2025 via SpaceX. In early October the first satellite was flown to the United States with a new expected launch date in November. The launch was delayed by the 2025 United States federal government shutdown.

Six of eight satellites are planned to fly high resolution optical payloads with less than 1m resolution and two satellites are planned to fly at with 1m resolution payloads.

As of 2025 Cynthia Liu was the project manager.

Launches are expected to begin in 2025 and end in 2031.