The church of St Leonard's Without is a small chapel built between 1230 and 1240 in the parish of Kirkstead, Lincolnshire, close to Woodhall Spa.

It served as the capella ante portas (Latin for chapel outside the gates) to the abbey and its name refers to its being "without" (outside) the walls of the monastery.

It may well have been built as a chantry chapel in memory of Robert de Tattershall, who died in 1212.

From 1883 the Society for the Protection of Ancient Buildings fought to save it from total decay.

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