king bhumibol adulyadej was the longest ruling non-royal head of state.
who is the longest ruling non-royal head of state?
king bhumibol adulyadej
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list of current longest-ruling non-royal national leaders





























this list of current longest ruling non-royal national leaders is a list of the current living longest ruling heads of nation-states or national governments, who are not royalty, and have served ten years or longer, sorted by length of tenure.
list of current longest-ruling non-royal national leaders