Timbun Mata

{{Short description|Island in Malaysia}}

{{more footnotes|date=August 2020}}

{{EngvarB|date=February 2017}}

{{Use dmy dates|date=February 2017}}

{{Infobox islands

| name = Timbun Mata Island

| image_name = Sabah-Islands-DarvelBay PulauTimbunMata-Pushpin.png

| image_caption = Location of Timbun Mata Island in Darvel Bay

| coordinates = {{coord|4|38|25|N|118|28|29|E|region:MY|display=inline,title}}

| map = Borneo

| location = Darvel Bay

| archipelago = Borneo

| waterbody = Celebes Sea

| total_islands =

| major_islands =

| area_km2 = 130.7

| area_footnotes =

| rank =

| length_km = 26

| length_footnotes =

| width_km = 10

| width_footnotes =

| coastline_km = 79.9

| coastline_footnotes =

| elevation_m = 620

| elevation_footnotes =

| highest_mount = Mount Tannabalu

| label_position = right

| country = {{flag|Malaysia}}

| country_admin_divisions_title = State

| country_admin_divisions = {{flag|Sabah}}

| population_as_of =

| population =

}}

Timbun Mata Island ({{langx|ms|Pulau Timbun Mata}}) is the largest island on the south side of Darvel Bay, in Semporna, Sabah, Malaysia. It is over {{convert|26|km}} long and almost {{convert|10|km}} wide at the widest point, and is also mountainous and was formerly (pre-2000) densely wooded. Mt. Tannabalu, the highest point at {{convert|620|m}}, is a conical, extinct volcano located at the centre of the island. A secondary peak, Mt. Sedungal, at the east end of the island rises to {{convert|489|m}}. The south side of the island is only separated from the mainland by a shallow channel known as the Trusan Sigalong. It is located at {{coord|4|38|25|N|118|28|29|E|region:MY|display=inline}} with an area of {{convert|114.97|km2}}.