New CCD photometry of NGC 6366 has lead to the discovery of some variable stars .
Two possible Anomalous Cepheids ( or Pop II Cepheids ) , three long period variables , one SX Phe and one eclipsing binary have been found .
Also a list of 10 candidate variables is reported .
The light curve of the RRab star , V1 , has been decomposed into its Fourier harmonics , and the Fourier parameters were used to estimate the star ’ s metallicity and distance ; [ Fe/H ] = -0.87 \pm 0.14 and d~ { } = ~ { } 3.2 \pm 0.1 kpc .
It is argued that V1 may not be a member of the cluster but rather a more distant object .
If this is so , an upper limit for the distance to the cluster of 2.8 \pm 0.1 kpc can be estimated .
The P - L relationship for SX Phe stars and the identified modes in the newly discovered SX Phe variable , V6 , allow yet another independent determination of the distance to the cluster of d~ { } = ~ { } 2.7 \pm 0.1 kpc .
The M _ { V } - [ Fe/H ] relationship for RR Lyrae stars is addressed and the case of V1 is discussed .