Friedrich "Fritz" Haffer (born 26 May 1914) was a Romanian male handball player.
He was a member of the Romania national handball team.
He was a part of the team at the 1936 Summer Olympics.
On club level he played for Hermannstädter Turnverein in Romania.
He is the brother of handball player Karl Haffer who was also part of the national team at the 1936 Summer Olympics.