El Cajon Transit Center (formerly Main & Marshall station) is a San Diego Trolley station served by the Copper, Green and Orange lines in the San Diego suburb of El Cajon, California.

The station is a major commuter center for the large suburb and is the convergence of multiple local and regional bus routes operated by the San Diego Metropolitan Transit System and Greyhound Lines.

[9] Following the sale of the naming rights of the Green Line to Sycuan Casino, the station was renamed El Cajon–Sycuan.

Courthouse became the line's current western terminus, and the one-stop extension to Arnele was meant to relieve congestion and confusion at El Cajon.

In 2024, a third track was added to the station, and the eastern platform was extended to allow shuttle trains to terminate there.