Seamus Finnigan is one of the many protagonists of the Harry Potter series. He is a Gryffindor student and member of Dumbledore's Army.
Seamus Finnigan attended Hogwarts and was sorted into Gryffindor. He was best friends with Dean Thomas. He allied himself with the Dumbledore's Army led by Harry Potter after apologizing to him for his behavior. His life after the wizarding war of Hogwarts is unknown.
He is portrayed by Devon Murray.
Through his school years, Seamus generally appeared good-natured and easy-going. He was also rather clumsy, as he set fire to a feather he was supposed to be levitating in his first year. He seems to display traits of more than one Hogwarts house, since the Sorting Hat had to think for almost a minute before deciding to sort him into Gryffindor. Seamus is also very curious, asking Professor Quirrell where he got his turban, Nicholas de Mimsy-Porpington how he could be "nearly headless" and Professor Snape about Inferi.
Of all the boys in Harry's dormitory, Seamus was the least enthusiastic supporter of Harry Potter and Albus Dumbledore, often demonstrating scepticism of Harry's claims. However, after reading Rita Skeeter's interview with Harry in the fifth year, he apologised to Harry and sent a copy to his "mam", as she did not believe that Voldemort was back. He did join Dumbledore's Army sometime in 1996, although he did not sign the actual membership list of the group. After Dumbledore's death the following year, Seamus insisted on remaining at Hogwarts in order to attend the funeral for the fallen headmaster, despite his mother's wish to remove him immediately from the perceived dangers at the school, demonstrating his allegiance to Dumbledore and Harry.
Seamus also demonstrated the characteristic bravery and loyalty of his house by opposing the Death Eaters at great personal risk during his final year at Hogwarts and in the final battle.
- Devon Murray does not fit the physical description given of Seamus Finnigan, but he does have the Irish accent needed for the role.