Sir Sills John Gibbons (1809–1876) was a London merchant and Lord Mayor of London in 1871.
He was born the son of Richard Gibbons of Chatham, Kent and became a hop merchant. He was a member of the Metropolitan Board of Works for the City of London (1868–71). He was elected an Alderman for Castle Baynard ward in 1862 and appointed a Sheriff of London for 1865–66 and 543rd Lord Mayor of London for 1871–72.[1]
Gibbons was created a baronet (of Sittingbourne) in 1872. He died bankrupt in Hastings in 1876 and was buried in Hastings cemetery. He had married Ann, the daughter of William Crookes; the baronetcy became extinct on his death.