GMM 25 is a Thai digital terrestrial television channel owned by GMM Grammy. The network offers a variety of content such as drama, music, news and entertainment programs targeting teenagers. One of its most notable program was Hormones: The Series.

GMM 25 was launched on 25 May 2014 after GMM Grammy was awarded with a digital TV license from the National Broadcasting and Telecommunications Committee in December 2013.

The network has also partnered with Line TV in providing full re-runs of its programs and Viu.

The CEO of GMM25 is Sataporn Panichraksapong, who is also the Managing Director of GMMTV.