Here are my minor tunes/songs, and I don't know nearly as many tunes as a lot of people I know (I think just tunes are fair; after all, a lot of jazz isn't sung, either):

A minor
Ballydesmond Polka
Clinch Mountain Backstep (some variants)
Cluck, Old Hen
Cold, Frosty, Morn
Elzic's Farewell
Got a Little Home to Go To (some variants)
Ginny, Comb Your Hair
Greasy Coat
Kitchen Girl (partly A major, partly A minor)
Red-Haired Boy
Salt River
Salty Dog
Santa Ana's Retreat (partly A major, partly A minor)

C minor
Marquis of Huntley

D minor
Gone to Kansas
John Barleycorn
Julia Delaney
Old Bangum
Pa Janvier
Sally in the Garden

E minor
All the Pretty Little Horses
Cuckoo
Hunting for the Buffalo (some variants)
Riding on a Load of Hay
Rights of Man
Scarborough Fair
Scollay's
Ships Are Sailing

G major in first part, mostly E minor in second part
Big Scioty
Blackberry Blossom
Flowers of Edinburgh
Jimmy in the Swamp
Midnight on the Water
Seneca Square Dance

Others
Polly Vaughan
Rising Sun Blues
Wayfaring Stranger
Wondrous Love