The Vidbo Runestones are two Viking Age memorial runestones that are located in the churchyard of the Vidbo church, which is about ten kilometers east of Knivsta, Uppsala County, Sweden, in the historic province of Uppland.
Uppland Runic Inscription 375 or U 375 is the Rundata catalog listing for a granite runestone that is 1.9 meters in height which consists of runic text carved in the younger futhark on two serpents which bracket a figure on a horse and a bird. Several other Scandinavian runestones include depictions of horses, including DR 96 in Ålum, N 61 in Alstad, Sö 101 in Ramsundsberget, Sö 226 in Norra Stutby, Sö 239 in Häringe, Sö 327 in Göksten, U 488 in Harg, U 599 in Hanunda, U 691 in Söderby, U 855 in Böksta, U 901 in Håmö, U 935 at the Uppsala Cathedral, and U 1003 in Frötuna. The two serpents have fetters around their necks and, near the bottom of the inscription, their tails, perhaps intended to bind them to the stone. The runic text is read clockwise from the head of the right-hand serpent and then from the tail of the serpent on the left. The inscription is classified as being carved in runestone style Pr2, which is also known as Ringerike style. This is the classification for runic text bands that have attached serpent or beast heads depicted as seen in profile. U 375 was described by one runic scholar as being a "good example" of a stone carved in style Pr2. Records from the 1600s indicate that the runestone was in three pieces in the churchyard, where it was later reconstructed and raised.