Police are appealing for public help to locate two people who have vanished from their respective homes on the Far North Coast.

In the first Missing Persons case, police from the Tweed/Byron Local Area Command are trying to find 37-year-old Kristian Robinson of Tweed Heads.

He was last seen in the Bilambil Heights area on Friday 21 May and police have concerns for his medical health.

Mr Robinson is described as Caucasian in appearance with a solid build and shoulder-length, sandy blonde hair.

He was last seen wearing a dark-blue knitted jumper with collar, denim jeans and shoes with Velcro fittings. He was also carrying a black and red backpack.

In the second, unrelated case, police have concerns for the medical welfare of 28-year-old Christine Watson.

Ms Watson, from Tweed Heads South, was last seen in the Tweed Heads area on Wednesday 19 May.

She is described as Caucasian in appearance with a medium build and shoulder-length blonde hair.

Anyone with information about either case is urged to contact Tweed Heads Police on (02) 5536 0999, the Missing Persons Unit on (02) 8835 7655 or Crime Stoppers on 1800 333 000.