Island guide
Ko Si Boya
A rural inhabited island south of Krabi, with local boat crossings, villages and tide-shaped shores.
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Nearby destinations
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Khlong Khanan Subdistrict
Khlong Khanan is a Nuea Khlong tambon of higher plains, lower coastal land and mangrove waterways, including the Laem Kruat area. · 8.4 km away
Taling Chan Subdistrict
Taling Chan is a coastal Nuea Khlong tambon containing Ban Khlong Yuan and the Hat Yao shoreline, with protected mangrove land. · 8.5 km away
Ko Jum
Ko Jum, also known as Ko Pu, is a lived-in island of villages and west-coast beaches in Ko Si Boya Subdistrict, south of Krabi town. · 9.8 km away
Khlong Khamao Subdistrict
Khlong Khamao is a Nuea Khlong tambon combining mangrove-side communities and cultivated land, including Ban Khuan To. · 15 km away
About Ko Si Boya
Ko Si Boya, also written Ko Siboya or Ko Sri Boya, is a physical island in Ko Si Boya Subdistrict, Nuea Khlong District. It is one island within that administrative area, which also covers other islands; statistics for the whole subdistrict should not be presented as this island’s population.
The island’s character is rural, with rubber-growing hills, fishing-community life and mangrove-fringed shores. Its beaches and tidal flats differ from the broad resort beaches of better-known neighbouring islands, making it more appropriate for a quiet village-based stay.
Local boat crossings connect the island with the Laem Hin and Laem Kruat mainland area. Confirm which pier and landing your host uses, the day’s last return and how to continue from the landing to your accommodation.
Tides affect shoreline access and swimming conditions, with shallow flats and rocky sections exposed at low water. Plan around the local crossing and your host’s advice rather than assuming a large ferry terminal or a fixed year-round timetable. Island-specific dated population and accessibility facilities remain unconfirmed.
- Sources
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- Last reviewed
- 22 October 2026
- Content owner
- Thailand Navigator Editorial Team
- Page type
- Island guide