State Highway 51 (SH 51) is a State Highway in Kerala, India that starts in Kodakara on NH 544 and ends in Kodungallur on NH 66. The highway is 27 km long.
Kodakara (NH 544)- Manakulagara - Koprakkalam - Pulipparakkunnu - Aloor- Kombodinjamakkal - Ashtamichira- Vadama - Mala- Poyya- Krishnan kotta- Keezhthali (joins NH 66)- Kodungallur