Entertainment Weekly reports that the former Skins star will play a young William Adama, the role portrayed by Edward James Olmos in Battlestar.
Pasqualino is best known for playing Freddie Mclair in the third and fourth series of Skins and has also played guest roles on BBC sitcom Miranda and Casualty.
Hellcats star Ben Cotton will also appear in Blood & Chrome as Coker, Adama's "battle-weary" commanding officer.
It was previously confirmed that the new series will focus on the early years of the Cylon war when a young Ensign Adama is assigned to the newly-built spaceship Galactica.
Battlestar Galactica: Blood & Chrome will premiere with a two-hour pilot on Syfy.