Baritone
The lowest singing voice is the male voice called bass.
a bass is the lowest male singing voice.
Bass.
Bass
tenor
The lowest normally recognised is the 'contralto'.
Bass is below Baritone and the lowest male voice range
The lowest singing voice is the male voice called bass.
a bass is the lowest male singing voice.
Bass is the name of a very low male singing voice.
The lowest female voice is called contralto.
Bass
pitch
Bass.
Contalto
If you are thinking of singing voice, most men would probably fall into the categories of tenor, baritone or bass, bass being the lowest voice. The majority of men would probably be in the baritone range. Some men can sing in the countertenor range, overlapping with the lowest typical range for women.
The lowest female voice is the Contralto; also considered the rarest in occurrance.