九十九里浜
is a town located in Chiba Prefecture, Japan. , the town had an estimated population of 15,343 in 7,092 households and a population density of 650 persons per km². The total area of the city is . Kujūkuri owes its name to its beach, Kujūkuri Beach, which is Japan's second longest. The word "Kujūkuri" roughly translates to mean "ninety-nine ri", with "kujūku" meaning "ninety-nine" and "ri" being an old unit of measurement equating to approximately 600 meters.