The band's names in a chronological order:
[a=Skid Row (6)] (start (March 1987) - June 26, 1987)
[a=Pen Cap Chew (2)] (June 27, 1987 - August 8, 1987)
[a=Bliss (108)] (August 9, 1987 - January 1988)
Ted Ed Fred (January 1988 - March 18, 1988)
Nirvana (March 19, 1988 - end (April 5, 1994))

It was rumoured that there were two other short-used band names before Nirvana: Throat Oyster and Windowpane (no official proofs for it though)

Final line-up:
Kurt Cobain – lead guitar, lead vocals (March 1987 (start)–April 5, 1994 (end); died April 5, 1994)
Krist Novoselic – bass (March 1987 (start)–April 5, 1994 (end)), accordion (1993–1994)
Dave Grohl – drums, backing vocals (September 25, 1990–April 5, 1994 (end))

Former members:
Aaron Burckhard – drums (March 1987 (start)–October 1987)
Dale Crover – drums (December 1987–February 15, 1988, August 10, 1990–August 25, 1990), backing vocals (1988)
[a=Dave Foster (14)] – drums (February 16, 1988–May 24, 1988)
Chad Channing – drums (May 25, 1988–June 1990)
Jason Everman – rhythm guitar, backing vocals (February 5, 1989–July 19, 1989)
Dan Peters – drums (June 1990–August 1990, September 1990–September 24, 1990)

Touring musicians:
Robert Roth – guitar (August 1989) (*rehearsals only)
Ben Shepherd – guitar (September 26, 1989-September 28, 1989) (*soundcheck only)
John Duncan – guitar (July 15, 1993–July 31, 1993)
Lori Goldston – cello (July 15, 1993–January 8, 1994)
Pat Smear – rhythm guitar, backing vocals (September 23, 1993–April 5, 1994 (end))
Melora Creager – cello (February 5, 1994–April 5, 1994 (end))

Session musicians:
Mark Pickerel – drums (1989)
Kirk Canning – cello (1991)
Kera Schaley – cello (1993)

Live guest musicians:
Tony Poukkula – guitar (1987)
Ryan Aigner – guitar (1987) (also was the band's first manager)
Antony Hodgkinson (aka Dancing Tony) – dancing (1990, 1991, 1992)