This　paper　presents　a　method　for　measuring　circumferential　Lamb　waves　propagating　on　a　cylindrically　curved　thin　plate.　The　measurement　is　carried　out　using　a　wideband　and　line-focused　poly(vinylidene　fluoride)　transducer　along　with　a　defocusing　waveform　measurement　method.　After　synthesizing　the　acquired　waveforms,　interference　patterns　can　be　obtained　and　a　cross　correlation　method　is　developed　to　accurately　extract　the　wave　velocity　as　a　function　of　wave　frequency.　Using　three　stainless　steel　thin　plates　of　different　thicknesses　(100,　150,　and　300　mu　m)　and　a　radius　of　curvature　of　10　mm,　dispersion　curves　for　several　fundamental　and　higher　order　modes　of　circumferential　Lamb　waves　are　simultaneously　determined.　Theoretical　dispersion　curves　are　also　calculated　and　compared　with　their　experimental　counterparts.　Very　good　agreements　are　observed,　which　concludes　the　measurement　accuracy　of　this　measurement　method.　(C)　2015　Acoustical　Society　of　America.