In English, we call w "double-u", referring to the original representation of [w], which looked like uu, or two us. Then, in French, they pronounce it "double-veh", presumably because the modern form looks like two vs or "veh".
The question is: do all languages which utilise the Latin alphabet do a similar thing, giving a name to the letter which refers to either the letters u or v? Or the converse question: is there any language which has a unique name for w, whose etymology is not linked to another letter in any recognisable way?