Ko Yao Yai means 'big long island'.
The other main island of the group is Ko Yao Noi ('little long island'), off Ko Yao Yai's north side and separated from it by a narrow sound.
The two islands form Phang Nga's Ko Yao District.
Ko Yao Noi is more popular with visitors as it has more facilities.
[1] This Phang Nga Province location article is a stub.