There are so many. Some who have not been mentioned yet:

Reed Martin.
A great innovative and creative clawhammer player from Cabin John Maryland.

Perry Bechtel
was a great plectrum player from Georgia.

Buddy Wachter
Accomplished plectrum and tenor banjo virtuoso.

Cynthia Sayer
Plectrum banjo player from New York City

Elmer Snowden
A great jazz banjo player who lead the original Washingtonians before they were taken over by Duke Ellington

Don Vappie
A great jazz banjo revivalist.

Erik Darling
True Religion on Vanguard records

Laura Boosinger
A great revivalist OT player

Barney McKenna has been mentioned but there is
Gerry O'Connor for Irish.

Johnny St. Cyr
Jazz banjoist with the Hot Five and Louis Armstrong

Lawrence Moreiro
Trad jazz banjoist with Bunk Johnson

Billy Faier
A legend among banjo players

Bill Keith
Innovative bluegrass player who adatped a "conjunct melody" style of playing.

David Holt
Traditional revivalist for OT

Taj Mahal
A great traditional revivalist with a unique sound.
Check out the score for the movie "Sounder".

George Grove
Tasteful player with the new Kingston Trio.

Dave Guard
Was innovative with the Kingston Trio

Fleming Brown
Traditional revivalist from Chicago and the mentor for
Stephen Wade

Frank Lee
Traditional revivalist with the Freight Hoppers

Barry Hall from Canada

Mike Pinagtore
Tenor banjoist with Paul Whiteman Orchestra

Harry Reser
Tenor solist with the Cliquot Eskimos

Van Eps and Ossman
A great duo from the early nineteen hundreds who
did Ragtime pieces finger-style.

Tim Allan from Canada
Tenor banjo solist

Mike Seeger and Tom Paley
with the New Lost City Ramblers

Narvin Campbell
Jazz trad with Preservation Hall Jazz Band


Tommy Jarrell, Kyle Creed, Fred Cockerham
Round Peak style players

Trad players:
1. Wade Ward
2. Pete Steele
3. Obray Ramsay
4. Roscoe Holcomb
5. Cousin Emmy
6. Lily Mae Ledford (of the Coon Creek Girls)
7. Stringbean

And here's a couple that you've never heard of but they are damned fine banjo pickers.

Arkansas Red from Eureka Springs, Arkansas

And

My friend and mentor Bill Rutan who I think is one of the finest tenor banjo players in the country.

And this is just the tip of the proverbial banjo iceberg.

From a guy who loves the banjo,

Frank Hamilton