Eiffelton is a lightly populated locality in the Mid-Canterbury region of New Zealand's South Island.
Eiffelton is situated on the Canterbury Plains near the Hinds River, which reaches the Pacific Ocean in nearby Longbeach. The small township of Hinds is to Eiffelton's west. Other nearby settlements include Lynnford between Eiffelton and Hinds, Willowby to the north, and Flemington and the ghost town of Waterton to the east. The closest town of significant size is Ashburton to the north.
Eiffelton's major claim to fame is that in 1978, it was the site of the discovery of an object similar to the Ashburton balls six years after the original balls were found. The balls were pieces of space debris from the failed Russian space vessel Cosmos 482.
Eiffelton once had a Catholic church. Mass was first said in the area in 1888 in Waterton's town hall, but it was subsequently held in Eiffelton at either the school or the town hall. On 4 June 1961, a proper church was built, the Church of St Thomas More, and 300 people gathered for its formal opening. It seated 80 for regular services, but declining attendance meant that Mass was held only monthly in the early 1970s. It closed on 7 November 1976, with the altar taken to a church in Hinds and the church's building moved to a nearby site to be used by local scouts.
Eiffelton has a town hall and formerly had a primary school. As of 2000, it merged with two other nearby schools and relocated to a site in Willowby. It also had a play centre for children under primary school age, but between 2001 and 2005, the play centre also relocated to Willowby.