ỏ latin small letter o with hook above (U+1ECF) @ Graphemica

ø latin small letter o with stroke (U+00F8) @ Graphemica

Charbase: Latin Extended Additional

Ǫ latin capital letter o with ogonek (U+01EA) @ Graphemica

ᴖ latin small letter top half o (U+1D16) @ Graphemica

ɔ latin small letter open o (U+0254) @ Graphemica

Ỏ latin capital letter o with hook above (U+1ECE) @ Graphemica

Ơ latin capital letter o with horn (U+01A0) @ Graphemica

Ṏ latin capital letter o with tilde and diaeresis (U+1E4E) @ Graphemica

ô latin small letter o with circumflex (U+00F4) @ Graphemica

Charbase: Latin Extended Additional