The Temeraire in Saffron Walden gained the top rating for its hygiene levels as part of the council's Scores on the Doors programme.
Council inspectors visited the pub in High Street and awarded it a five-star rating.
Scores on the Doors highlights hygiene standards in pubs, restaurants, takeaways and clubs across the borough.
The pub's manager, Ashley Everett, said: "We are delighted that we have gained the top rating and I’m sure our customers will welcome the news too.
"Standards of hygiene at the pub are of paramount importance.
"All of the staff work hard to ensure that the pub offers its customers the highest levels of hygiene at all time and we are delighted that our efforts have been recognised."
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