The 12603 / 12604 Chennai- Charlapalli Superfast Express is a Superfast Express in India which runs between Charlapalli and Chennai Central.

From 2025 The train terminal shifted From Hyderabad to Charlapalli and being operated as Chennai Charlapalli SF express.

The Southern Railway (SR) of the Indian Railways administers this train & the train shares its rakes with 22649/22650 Yercaud Express.

Train number 12604 runs from Charlapalli to Chennai Central while 12603 runs from Chennai Central to Charlapalli.

The train runs via Sullurpeta, Naidupeta, Gudur, Nellore, Kavali, Singarayakonda, Ongole, Chirala, Bapatla, Nidubrolu, Tenali, Guntur, Sattenapalle, Piduguralla, Nadikudi Jn, Miryalaguda and Nallagonda The train is generally hauled by WAP-4 or WAP 7 from Hyderabad to Chennai Central.