Skrzynno [ˈskʂɨnnɔ] is a village in the administrative district of Gmina Wieniawa, within Przysucha County, Masovian Voivodeship, in east-central Poland.

By 1234, Skrzynno already was a local administrative center (districtus Scrin), and first mention of its parish church comes from 1280.

In that year, Prince Przemysł II made a transaction with Bishop of Poznań, giving him villages in Greater Poland, in exchange for Skrzynno, together with the church (villa forensem sitam in terra Sandomiriensi cum ecclesia).

It is not known when Skrzynno received its town charter (Sroda Slaska rights), it probably took place before the year 1308.

During the reign of King Casimir III the Great, Skrzynno was a royal town.