The Arcminute Microkelvin Imager (AMI) consists of a pair of interferometric radio telescopes - the Small and Large Arrays - located at the Mullard Radio Astronomy Observatory near Cambridge.

AMI was designed, primarily, for the study of galaxy clusters by observing secondary anisotropies in the cosmic microwave background (CMB) arising from the Sunyaev–Zel'dovich (SZ) effect.

Both arrays are used to observe radiation with frequencies between 12 and 18 GHz, and have very similar system designs.

The antennas are separated by distances ranging between 18 and 110 m. The telescope has an angular resolution of approximately 30 arcseconds.

The LA is being used to carry out the Tenth Cambridge Survey of radio sources.