Hoo is a village and civil parish in the East Suffolk district of the English county of Suffolk. It is located 3 miles (4.8 km) north-west of the town of Wickham Market and 3 miles (4.8 km) south-west of Framlingham. The parish lies to the south of the River Deben - neighbouring villages include Kettleburgh, Charsfield and Letheringham. The parish council is combined with Cretingham and Monewden, with Hoo itself having one of the smallest populations in Suffolk with 86 residents recorded at the 2001 census. At the 2011 Census, the parish was recorded in combination with Letheringham giving a total population of 160.