Has any nation created a thermobaric anti-ship missile?
Short answerNo confirmed example is offered, though compatible warheads have likely been explored and their usefulness against ships would depend strongly on detonation conditions.
NotesNo confirmed fielded system is identified, though several states have explored warheads that could fit anti-ship missiles. Thermobaric effects can be devastating in favorable enclosed conditions, yet a warship does not guarantee those conditions at every impact point. Employment geometry and detonation location therefore matter as much as the warhead's reputation.