A man is undergoing surgery after he was stabbed in the neck at a takeaway shop in Kings Cross on Friday afternoon.

Paramedics were called to the intersection with Bayswater Road and Darlinghurst Road, about 1.30pm where they found the man with stab wounds to his neck.

The man, believed to be in his 40s, had called an ambulance from Fresca Bakery.

He was assessed at the scene before being taken to St Vincent's Hospital, police said.

He is undergoing surgery and his condition is unknown.