Henry XI of Głogów (Polish: Henryk XI Głogowski) (ca. 1435 – 22 February 1476) was a Duke of Głogów (including half of Głogów, Szprotawa, Krosno Odrzańskie, Świebodzin, Kożuchów and Zielona Góra) and Lubin since 1467.
He was the second son of Henry IX the Older, Duke of Głogów by his wife Hedwig, daughter of Duke Konrad III of Oleśnica.
The death of his older brother Sigismund on 24 December 1458 made him the sole heir of his father (another brother, whose name is unknown, died young). In 1462, Henry XI participated in the meeting between King Casimir IV of Poland and King George of Bohemia. With his father, he was excommunicated by the Pope Pius II for not to support the eventual inheritance of Casimir IV's son over the Bohemia throne. After Henry IX's death in 1467, his son assumed the government over Głogów.
Henry XI was very indolent and sickly person since his childhood. He settled his main residence in Kożuchów, which was the capital of his Duchy. After assumed the government, he didn't show greater political ambitions, because he lived all his adult life under the shadow of his father. Following the advises of the City Council of Wrocław he send a message to Kraków, where he encouraged King Casimir IV or one of his sons to take the throne of Bohemia.
In 1468, Henry XI decided to support King Matthias Corvinus of Hungary and participated in his unsuccessful trip to Silesia and Lusatia against King George of Bohemia.