Chapel of St Helen (also St Helen’s Chapel) is an ancient religious building in Wicken Bonhunt, north-west Essex. It dates from around the 11th century and is believed to be one of the oldest surviving buildings in the east of England. It has also been described as 10th century. Pevsner's Essex architecture guide of 1954 describes it as: "A complete Norman chapel of nave and chancel with a number of original windows". The chapel is at Bonhunt Farm, on the B1038 (Newport to Buntingford) road and close to a motorway flyover for the M11.