Betatorquevirus is a genus of viruses in the family Anelloviridae, in group II in the Baltimore classification.

The genus Betatorquevirus includes all "torque teno mini viruses" (TTMV), numbered from 1 to 38 as 38 species.

The genus contains the following species:[1] The discovery of TTMV, like the original Torque Teno virus (TTV) isolate, was accidental.

TTV-specific primers used in PCR of human plasma samples yielded sequences that partially matched that of TTV, but were noticeably shorter.

[2][3] Its exact transmission mechanism is unknown, but is thought to be possible by blood-borne, sexual, fecal-oral, and respiratory routes.