Retegno

{{Infobox Italian frazione

| name = Retegno

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| coordinates = {{coord|45|9|N|9|41|E|type:city(1,836)_region:IT|display=inline,title}}

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| region = Lombardy

| province = Province of Lodi (LO)

| comune = Fombio

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| postal_code = 26861

| area_code = 0377

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{{Expand Italian|topic=geo|Retegno|date=June 2018}}

Retegno is a small town within the municipality of Fombio, Lombardy, Italy.