Grotte di Castro

{{Short description|Municipality in Lazio, Italy}}

{{Infobox Italian comune

| name = Grotte di Castro

| official_name = Comune di Grotte di Castro

| native_name =

| image_skyline = GrotteDiCastro3.jpg

| imagesize =

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| image_caption =

| image_shield = Grotte di Castro-Stemma.png

| shield_alt =

| image_map =

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| coordinates = {{coord|42|40|N|11|52|E|type:city(2,915)_region:IT|display=inline}}

| coordinates_footnotes =

| region = Lazio

| province = Viterbo (VT)

| frazioni =

| mayor_party =

| mayor = Piero Camilli

| area_footnotes =

| area_total_km2 = 39.3

| population_footnotes =

| population_total = 2857

| population_as_of =2008All demographics and other statistics: Italian statistical institute Istat.

| pop_density_footnotes =

| population_demonym = Grottani

| elevation_footnotes =

| elevation_m = 467

| twin1 =

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| postal_code = 01025

| area_code = 0763

| website =

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}}

Grotte di Castro is a municipality ({{langx|it|comune}}) in the Province of Viterbo in the Italian region of Latium, located about {{convert|100|km|mi}} northwest of Rome and about {{convert|35|km|mi}} northwest of Viterbo.