Yimbun Railway Tunnel is a heritage-listed tunnel at Sinnamons Lane, Harlin. It was designed and constructed by Queensland Railways from 1909 to 1910. It was added to the Queensland Heritage Register on 27 November 2008.

The Yimbun Railway Tunnel, located 96.19 kilometres (59.77 mi) from Wulkuraka railway station, is a concrete-lined tunnel built between 1909 and 1910. It is the only railway tunnel on the Brisbane Valley railway line. This line was developed as a branch line from the main Brisbane-Toowoomba rail line. It was constructed from Wulkuraka near Ipswich to Lowood (1884) then extended to Esk (1886) then Toogoolawah (February 1904), Yimbun (September 1904), Linville (1910), Benarkin and Blackbutt (1911) and finally to Yarraman (1913).