Ilkley is a spa town and civil parish in the City of Bradford in West Yorkshire, in Northern England. Historically part of the West Riding of Yorkshire, Ilkley civil parish includes the adjacent village of Ben Rhydding and is a ward within the City of Bradford. Approximately 12 miles (19 km) north of Bradford and 17 miles (27 km) north-west of Leeds, the town lies mainly on the south bank of the River Wharfe in Wharfedale, one of the Yorkshire Dales.

"On Ilkla Mooar Baht 'at" is a folk song from Yorkshire, England. It is sung in the Yorkshire dialect, and is considered the unofficial anthem of Yorkshire. It is sung to the hymn tune "Cranbrook", composed by Thomas Clark in 1805; while according to Andrew Gant, the words were composed by members of Halifax Church Choir "some 50 years after Clark wrote his melody", on an outing to Ilkley Moor near Ilkley, West Yorkshire. It is classified as numbers 2143 and 19808 in the Roud Folk Song Index.