Here is a list of the People who died in DBZ. If i missed any please email me!

 

Goku

1. He was killed by Raditz at the beginning of DBZ.

2. He was killed when Cell blew up.

Gohan

1. He was killed when Buu destroyed the Earth.

Vegeta

1. Died while fighting Freiza.

2. Died while fighting Majin Buu

Goten

1. He was killed when Buu destroyed the Earth.

Trunks

1. He was killed when Buu destroyed the Earth.

Krillin

1. Killed by Piccolo Daimio.

2. Killed by Freiza.

3. Killed when Buu destroyed the earth.

Piccolo

1. Nappa killed him.

2. Also killed when Buu destroyed the earth.

Yamcha

1. He died when a Saibaman exploded on his back.

2. Eaten by Majin Buu.

Tien

1. Used all his energy trying to kill Nappa, he didn't kill Nappa and he died because he had no energy left.

2. Killed when Buu destroyed the earth.

Chou-zu

1. Committed suicide when trying to kill Nappa. He too, failed in killing the giant Saiyajin.

2. Killed while fighting Piccolo Daimio.

3. Died when Buu destroyed the earth.