The Cycnus was an express train operated by Ferrovie dello Stato, linking Milan with Ventimiglia, Italy.

The Cycnus was introduced on 30 September 1973 in order to improve the first class-only Trans Europ Express (TEE) service along the Ligurian coast.

The schedule was designed as a "mirror" of the TEE Ligure, resulting in a very early departure from the French-Italian border in Ventimiglia and returning from Milan just after midnight.

[2] While the Ligure had constant loading figures, the Cycnus ran almost empty at the beginning of the week, but had to be extended to 11 coaches on Fridays.

Eventually it the continued running a first class-only train appeared to be too much of a financial burden, and the Cycnus was converted to a two class InterCity service on 29 May 1978.