William Cowlishaw Johnson (1862 – 8 November 1943) was a British politician.
He also served on Stepney Metropolitan Borough Council, and as a magistrate chaired the Tower Hamlets Division.
[1] At the 1925 London County Council election, Johnson lost his County Council seat, by then Whitechapel and St George's, but was instead appointed as an alderman.
However, the stress of the position led to poor health, and he was soon replaced by Percy Harris.
He left the council in 1931, retiring to Watford, where he died in 1943.