Giambattista Dal Mare, O.P. (died 1620) was a Roman Catholic prelate who served as Bishop of Lavello (1618âÂÂ1620).
Giambattista Dal Mare was ordained a priest in the Order of Preachers. On 22 October 1618, he was appointed during the papacy of Pope Paul V as Bishop of Lavello. On 4 November 1618, he was consecrated bishop by Filippo Filonardi, Cardinal-Priest of Santa Maria del Popolo, with Diego Alvarez (archbishop), Archbishop of Trani, and Paolo De Curtis, Bishop Emeritus of Isernia, serving as co-consecrators. He served as Bishop of Lavello until his death on 23 September 1620.