Tsu (津) is the capital of Mie prefecture, Japan, and home to about 290,000 people.
Tsu is often claimed to be the world's shortest pronounceable city name ('[tsɯ]' in the international phonetic alphabet). The vowel is similar to the one in the English word 'too', but is shorter, has less lip rounding, and is typically voiceless; it is perceptible, but sounds 'whispered'. Also, as English speakers may find the [t] hard to hear, the name sounds rather like 'Sue'. Pronouncing the [t], however, is essential in conveying the meaning.
In Japanese, the city name is usually written either using the character 津, or with つ, a 'hiragana' symbol which indicates the syllable /tsɯ/. Tsu is the only Japanese city name which consists of a single kana, making it the shortest name for a place of any size in Japan.
Chubu Airport is connected to Tsu by a ferry service.
Tsu is known for its excellent unagi (eel) restaurants.