Yes, doubtless many jazz musicians are atheists.

Valerie Wilmer has written:

'As serious as your life' -- subject- s -: African American musicians, History and criticism, Jazz, Jazz musicians, United States

'Jazz people' -- subject- s -: Biography, History and criticism, Jazz, Jazz musicians

Dizzy Gillespie has written:

'Dizzy atmosphere' -- subject(s): Interviews, Jazz musicians

'To be, or not ... to BOP' -- subject(s): Biography, Jazz musicians

'Dizzy: To be or not to bop'

'Body and Soul'

'Dizzy' -- subject(s): Biography, Jazz musicians

'Dizzy Gillespie / A Jazz Master'

'To be, or not-- to bop' -- subject(s): Biography, Jazz musicians

'The Dizzy Gillespie Collection'

Bix Beiderbecke was a jazz cornetist from Iowa, and one of the leading jazz musicians of the 1920s.

John Chilton has written:

'Who's who of British jazz' -- subject(s): Dictionaries, Biography, Jazz musicians

'The song of the hawk' -- subject(s): Biography, Jazz musicians