Montelongo

{{Infobox Italian comune

| name = Montelongo

| official_name = Comune di Montelongo

| native_name =

| image_skyline = Montelongo.jpg

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| image_caption = Panorama of Montelongo

| image_shield =

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| coordinates = {{coord|41|44|N|14|57|E|type:city(456)_region:IT|display=inline,title}}

| coordinates_footnotes =

| region = Molise

| province = Campobasso (CB)

| frazioni =

| mayor_party =

| mayor = Nicolino Macchiagodena

| area_footnotes =

| area_total_km2 = 12.7

| population_footnotes = All demographics and other statistics: Italian statistical institute Istat.

| population_total = 357

| population_as_of = 30 November 2017

| pop_density_footnotes =

| population_demonym = Montelonghesi

| elevation_footnotes =

| elevation_m = 592

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| postal_code = 86040

| area_code = 0874

| website = {{official website|http://www.comune.montelongo.cb.it/}}

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}}

Montelongo is a comune (municipality) in the Province of Campobasso in the Italian region Molise, located about {{convert|30|km|mi}} northeast of Campobasso.

Montelongo borders the following municipalities: Bonefro, Montorio nei Frentani, Rotello, Santa Croce di Magliano.