Marcetelli

{{Infobox Italian comune

| name = Marcetelli

| official_name = Comune di Marcetelli

| native_name =

| image_skyline =Marcetelli.jpg

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| image_caption = View of Marcetelli

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| coordinates = {{coord|42|14|N|13|3|E|type:city(126)_region:IT|display=inline,title}}

| coordinates_footnotes =

| region = Lazio

| province = Rieti (RI)

| frazioni =

| mayor_party =

| mayor = Daniele Raimondi

| area_footnotes =

| area_total_km2 = 11.08

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

| population_total = 78

| population_as_of = 30 September 2017

| pop_density_footnotes =

| population_demonym = Marcetellani

| elevation_footnotes =

| elevation_m = 930

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| postal_code = 02020

| area_code = 0765

| website = {{official website|http://www.marcetelli.gov.it/}}

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}}

Marcetelli ({{langx|it|label=Sabino|Marcitelli}}) is a {{lang|it|comune}} (municipality) in the Province of Rieti in the Italian region of Latium, located about {{convert|60|km|mi}} northeast of Rome and about {{convert|25|km|mi}} southeast of Rieti.

Marcetelli borders the following municipalities: Ascrea, Collalto Sabino, Collegiove, Paganico Sabino, Pescorocchiano, Varco Sabino.

By number of inhabitants, it is the smallest municipality in Lazio and among the smallest in Italy.