This　paper　presents　an　analytical　model　for　the　vibration　analysis　of　V-shaped　beam　electrothermal　microactuators.　With　the　consideration　of　the　unique　geometrical　feature,　i.e.,　the　V-shaped　beam　with　the　two　inclined　half-spans　interconnecting　at　the　center　of　the　beam,　both　lateral　and　longitudinal　flexible　deformations　are　included　the　vibration　model　established　in　this　work.　Furthermore,　the　vibrations　in　the　lateral　and　longitudinal　directions　are　coupled,　therefore　both　the　boundary　and　continuity　conditions　are　defined　to　obtain　the　frequency　equation.　The　natural　frequencies　can　be　calculated　by　solving　the　frequency　equation　numerically.　To　verify　the　established　vibration　model,　the　comparison　is　conducted　between　analytical　results　and　finite-element　(FE)　simulation　results　using　commercial　software　ANSYS.　The　comparison　of　the　modal　shapes　and　frequencies　demonstrate　the　results　based　on　the　established　analytical　model　well　agree　with　FE　simulation　results.　This　work　provides　the　first　insight　study　on　the　vibration　analysis　of　the　V-shaped　beam　electrothermal　microactuators　with　aims　to　lay　the　foundation　of　establishing　thermo-mechanical　model　that　could　be　used　for　the　control　of　V-shaped　actuators,　and　the　improvement　design　in　achieving　optimal　dynamic　performance.　©　Copyright　2017　ASME.