Cellino San Marco

{{Infobox Italian comune

| name = Cellino San Marco

| official_name = Comune di Cellino San Marco

| native_name =

| image_skyline =

| imagesize =

| image_alt =

| image_caption =

| image_shield = Cellino San Marco-Stemma.png

| shield_alt =

| image_map =

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| pushpin_label_position = left

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| coordinates = {{coord|40|28|N|17|58|E|region:IT|display=inline,title}}

| coordinates_footnotes =

| region = Apulia

| province = {{ProvinciaIT (short form)|sigla=BR}} (BR)

| frazioni =

| mayor_party =

| mayor = Marco Marra

| area_footnotes =

| area_total_km2 = 37.84

| population_footnotes = Population from ISTAT

| population_total = 6531

| population_as_of = 30 June 2017

| pop_density_footnotes =

| population_demonym = Cellinesi

| elevation_footnotes =

| elevation_min_m =

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| elevation_m = 56

| twin1 =

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| saint = St Mark the Evangelist, St Catherine of Alexandria

| day = 25 April, 25 November

| postal_code = 72020

| area_code = 0831

| website = {{official website|http://www.csm.br.it/}}

| footnotes =

}}

Celino San Marco (Leccese: {{lang|scn|Cilinu}}) is a comune in the province of Brindisi in Apulia, on the south-east coast of Italy. Its main economic activities are tourism and the growing of olives and grapes.