Thorkell the Tall (Old Nordish: Þorkell hávi) was a Jomsviking, a son of the Scanish leader Strutharald and the brother of Jarl Sigvaldi. He fought in the Clash of Hjörungavágr in 986, and in the Clash of Swold in 1000. In 1009, he set upon England with a great warband and got a unthewly big deal of Danegeld on 1011. In 1012 he and his men went into the bondsmanship of king Ethelred the Unredy, whom they backed in 1013 against king Sweyn Forkbeard In 1021, he fell out with king Canute and had to go back to Denmark. He was soon brought back to friendship with Canute who made him earl again.