The Hagby Runestones are four runestones that are raised on the courtyard of the farm Hagby in Uppland, Sweden. They are inscribed in Old Norse using the Younger Futhark and they date to the 11th century. Three of the runestones (U 153, U 154 and U 155) are raised in memory of Varangians who died somewhere in the East, probably in Kievan Rus'.
In 1929/30, they were discovered in the walls of the basement of the farm Litzby, which stood a few hundred metres from Hagby, but which burnt down in the 1880s. The runestones were burnt and fragmented but it was possible to piece 120 fragments together into the four runestones that are found on the courtyard of Hagby today.
There are additional runestones on the property of Hagby, and notably U 143, which is treated in the article Uppland Rune Inscriptions 101, 143 and 147, and U 148, which is treated in the article Jarlabanke Runestones.