John Maclean Rolls, 2nd Baron Llangattock (25 April 1870 – 31 October 1916) was a British barrister and army Major.

He was a barrister of the Inner Temple, London, and served for many years with the 1st Monmouth Volunteer Artillery, retiring with the rank of captain and honorary major.

He died on 31 October 1916, aged 46, from wounds received at the Battle of the Somme while serving as a major with the 1st Monmouthshire Bty Royal Field Artillery.

He never married; his younger brother Henry Allan Rolls, who was heir presumptive, had died four months previously, and his youngest brother, Charles Rolls of Rolls-Royce fame, had died 6 years earlier; thus the title became extinct.

Upon his death The Hendre estate passed first to his sister, Eleanor (who died without issue), and finally through his aunt, Patricia Harding (née Rolls), to his first cousin, John Reginald Harding, whose descendants bear the surname Harding-Rolls.