The Echigo Line (越後線, Echigo-sen) is a railway line operated by East Japan Railway Company (JR East) which connects the cities of Kashiwazaki and Niigata in Niigata Prefecture, Japan.

The line's name is taken from the name of the ancient Echigo Province, which corresponds to most of modern-day Niigata Prefecture.

The Echigo Railway Co. opened the Hakusan - Kashiwazaki section of the line in 1912, and was nationalised in 1927.

In 1951, the Hakusan - Niigata section was opened, CTC signalling was commissioned in 1982, the line was electrified at 1,500 V DC in 1984, and freight services ceased in 1987.

Between Kashiwazaki and Yoshida, there is a period of over three hours where no trains operate.