Top left: distribution of mass-to-light ratio M(HI)/L_B for all Lynx-Cancer void galaxies with Hi data. Top right: the relationship between M(HI)/L_B and the absolute magnitude M_B. Bottom left: distribution of M(HI)/L_B for late-type dwarf and subluminous galaxies in the Local Volume (LV) groups and the CVnI cloud from Karachentsev (2005). Bottom right: the relationship between M(HI)/L_B and the absolute magnitude M_B for the same late-type galaxy sample. The scatter of parameter M(HI)/L_B is large for all values of M_B, indicating the interplay of several significant factors. Nevertheless, the fraction of higher M(HI)/L_B ratio objects is clearly larger for void galaxies. Also, the three highest ratio galaxies from the LV sample are situated in the outer parts of groups and CVnI cloud (marked by their names). Median values of M(HI)/L_B are respectively, 1.21 and 0.87 for void and the LV “late-type in groups” samples, which differ by a factor of ~1.39. Upper boundary line for the void sample also is a factor of 1.6−2 higher than that for the “group” sample.