February

Estrella War Ellsworth, AZ  While not specifically a hurdy gurdy event, this is a rather large event sponsored by the Society for Creative Anachronisms (S.C.A. - we are a medieval living history group; find your local chapter at sca.org)  There is a very large hurdy gurdy presence here, with music & jam sessions to be found throughout.  Website
 
May
Youlgrave Hurdy Gurdy Festival Derbyshire, UK (England) Yearly festival (early May)    website
 
Northwest Folklife Festival Seattle, WA   Yearly music festival every Memorial Day.  Usually you can find quite a few of us 'gurdy players floating around (at times past they've actually had a hurdy gurdy stage) website
 
June
Chants de Vielles  Quebec, Canada   website
 
July
Le Son Continu, France   Yearly music festival, with a very strong hurdy gurdy presence  website

Pennsic War Slippery Rock, PA  This is a rather large event sponsored by the Society for Creative Anachronisms (S.C.A. - we are a medieval living history group; find your local chapter at sca.org)  There is a very large hurdy gurdy presence here, with music & jam sessions to be found throughout the event. website
  
Lark in the Morning Music Camp Mendocino County, CA  This music camp has workshops for many different instruments, including the Hurdy Gurdy! Enough HG players attend to warrant their own classes & tunebooks! website
 
August
Faerieworlds Festival  Eugene, OR   They always have at least one electric band using a hurdy gurdy. website