The KTM Komuter Northern Sector (Malay: KTM Komuter Utara) is one of the five KTM Komuter services run by Malaysian rail operator Keretapi Tanah Melayu (KTM). The service was introduced on 11 September 2015 following the completion of the Ipoh-Padang Besar Electrification and Double-Tracking Project in December 2014, which also saw the extension of ETS services to Padang Besar from Ipoh.
Currently, the KTM Komuter Northern Sector consists of two routes, namely the Butterworth - Padang Besar route and the Ipoh - Butterworth route. The lines share tracks with KTM ETS services, though the Komuter services call at stations also not served by ETS.