Mount Sempu

{{Short description| Volcano in Sulawesi, Indonesia }}

{{Infobox mountain

| name = Mount Sempu

| photo =

| photo_caption =

| elevation_m = 1,549

| elevation_ref = {{cite gvp|name=Riendengan-Sempu|vn=266040|access-date=2021-06-24}}

| prominence =

| listing = Ribu

| location = Sulawesi, Indonesia

| range =

| map = Indonesia Sulawesi

| range_coordinates =

| label_position = right

| coordinates = {{coord|1.13|N|124.758|E|type:mountain_region:ID_scale:100000|format=dms|display=inline,title}}

| coordinates_ref =

| topo =

| type = Caldera

| age =

| last_eruption = Unknown

| first_ascent =

| easiest_route =

}}

Mount Sempu is a volcano in the northern arm of Sulawesi, Indonesia, which contains a 3 km wide caldera. A maar, called Kawah Masem, was formed in the south-west of the caldera and contains a crater lake. Sulfur deposits have been extracted from the maar since 1938. Historical records, however, are unknown from the volcano.