The Millennium Dial Armillary is one of six pieces of public art located in the town centre of Sutton in Greater London, England.

It serves three purposes: firstly, simply to tell the time; secondly, to commemorate time through various inscriptions including the Rotary motto "Service Above Self" and distances to nearby areas such as Kingston upon Thames; and thirdly, to commemorate the work which the Rotary Club has done.

It was slightly re-positioned in 2011, following a repaving of the pedestrianised High Street area, since when it has stood on the edge of the new central square in the town, directly in front of the Waterstones bookshop.

When deciding on the new position, the Rotary Club and the local council had to take account of the need for an adequate supply of sunlight.

[2] The armillary's installation has provided a focus for the town centre, and it will remain as a permanent memorial, marking both the new millennium and the important role the Rotary has played in the welfare of Sutton since 1923.