Avellaneda Department, Santiago del Estero

{{Infobox settlement

| name = Avellaneda Department

| native_name =

| native_name_lang = es

| settlement_type = Department

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| image_map = Departamento Avellaneda (Santiago del Estero - Argentina).png

| map_alt =

| mapsize = 180px

| map_caption = Location of Avellaneda Department within Santiago del Estero Province

| pushpin_map =

| pushpin_label_position =

| pushpin_map_alt =

| pushpin_map_caption = Location of Avellaneda Department within Santiago del Estero Province

| coordinates = {{coord|28|28|53|S|63|4|9|W|region:AR_type:adm2nd|display=inline,title}}

| coor_pinpoint =

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| subdivision_type = Country

| subdivision_name = {{flag|Argentina}}

| subdivision_type1 = Province

| subdivision_name1 = Santiago del Estero

| established_title =

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| seat_type = Head town

| seat = Herrera

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| unit_pref = Metric

| area_footnotes =

| area_total_km2 = 3902

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| population_footnotes =

| population_total = 20763

| population_as_of = 2010

| population_density_km2 = auto

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| timezone1 = ART

| utc_offset1 = -3

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}}

Avellaneda Department ({{langx|es|Departamento Avellaneda}}) is a department of Argentina in Santiago del Estero Province. The capital city of the department is situated in Herrera.