St Leonard's Church is in the village of Downham, Lancashire, England. It is an active Anglican parish church in the diocese of Blackburn. The tower dates from the 15th century, and the rest of the church was rebuilt in 1909–10. The church is recorded in the National Heritage List for England as a designated Grade II* listed building.HistoryThe oldest part of the church is the west tower, which dates from the 15th century. The rest of the church was rebuilt in 1909–10, and was designed by Mervyn Macartney.ArchitectureExteriorThe church is built in sandstone with a slate roof. Its plan consists of a nave and chancel under a continuous roof, a south chapel, a north organ chamber, a south aisle, a south porch, and a west tower. The tower has diagonal buttresses, and a west door with a moulded surround and a pointed head. Above it is a three-light window with a Tudor arched head. The window contains Perpendicular tracery. Above the windows the bell openings have two lights and pointed heads, and at the top of the tower is an embattled parapet with corner pinnacles and gargoyles. The windows of the south aisle have three lights, and the eastern bay is gabled. The parapet of the aisle is embattled. The outer and inner doors of the porch have chamfered jambs and pointed arches. The east window has five lights and a Tudor arched head.