The Bittern Line is a railway branch line in Norfolk, England, that links Norwich to Sheringham. It passes through the Broads on its route to an Area of Outstanding Natural Beauty on the north Norfolk coast. It is named after the bittern, a rare bird found in the reedy wetlands of Norfolk.

Norwich railway station is the northern terminus of the Great Eastern Main Line in the East of England, serving the cathedral city of Norwich, Norfolk. It is 114 miles 77 chains (185.0 km) down the main line from London Liverpool Street, the western terminus.