DZRJ-FM

DZRJ-FM is a commercial radio station owned and operated by the Rajah Broadcasting Network in the Philippines. Its studios are located at the RJ Building, Guadalupe Nuevo, Makati City, while its transmitter is located at Palos Verdes Subdivision, Antipolo City. DZRJ-FM broadcasts on the 100.3 MHz frequency and is popularly known as "RJ 100.3".

The station is one of the longest-running FM stations in the Philippines, tracing its origins back to the 1960s. It initially played Top 40 and pop music formats, and was a pioneer in introducing album-oriented rock (AOR) to Filipino audiences. Over the years, its format evolved.

RJ 100.3 is known for playing a mix of classic rock and contemporary hits, targeting a broad audience. The station also features news and talk segments. It is a significant player in the Metro Manila radio market and maintains a strong presence online.