The Church of Saint James the Apostle is a Roman Catholic parish church in Łosice, part of the Łosice deanery in the Diocese of Siedlce. It was built in 1776 on the initiative of parish priest Ludwik Lessel and consecrated in 1783. The structure is wooden, built using log construction, clad with weatherboards, and reinforced with buttresses. Its layout resembles a three-nave rectangle, with an indistinct chancel facing north. The main nave, square in shape, is covered with a sheet metal, triple-pitched roof, while an octagonal bell tower sits atop the ridge. Inside the church, pilasters dominate, and the interior is adorned with polychrome paintings and images, including a ceiling plafond depicting the Virgin Mary and a representation of the Holy Spirit. The main altar, in the 18th-century Baroque style, features the painting "The Crucifixion" along with statues of Saint Barbara and Saint Paul. Notable elements include a 19th-century Classicist organ prospect and preserved Rococo-style stalls and confessionals. The church has undergone several renovations, including in the 19th century and in the years 1930 and 1990. Its unique architecture and rich interior decoration make it not only a place of worship but also a valuable historical and cultural landmark of the region.