John Bowack (fl. 1737) was a British topographer, for many years a writing-master at Westminster School. In 1705–6, when living in Church Lane, Chelsea, he began to publish, in , 'The Antiquities of Middlesex, being a collection of the several church monuments in that county; also an historical account of each church and parish, with the seats, villages, and names of the most eminent inhabitants.' Of this work two parts appeared, comprising the parishes of Chelsea, Kensington, Fulham, Hammersmith, Chiswick, and Acton. A third part was promised, which would have extended through Ealing, New Brentford, Isleworth, and Hanwell; but from want of encouragement Bowack proceeded no further.