Lonsdale Square is a garden square in the Barnsbury district of Islington, North London. It is bounded by unusual Tudor Gothic Revival terraced houses, with picturesque gables and Elizabethan-style windows, and is probably unique among squares. All the houses are listed buildings. The central public garden contains flower beds and mature trees. The nearest tube stations are Highbury & Islington to the north-east and Angel to the south-east. The Anglican parish is Barnsbury, an early offshoot of Islington.