Wentorf bei Hamburg (German pronunciation: [ˈvɛnˌtɔʁf baɪ̯ ˈhambʊʁk] ⓘ) is a municipality in the district of Lauenburg, in Schleswig-Holstein, Germany.

In the Middle Ages Wentorf belonged to the Reinbek monastery and after the Reformation it was ruled by the duchy of Schwarzenbek.

Since the middle of the 19th century, Wentorf was connected to Hamburg City by railroad and country road.

As a result, Wentorf had significantly different opportunities to develop compared to most of the neighbouring communities that had kept their rural character.

Shortly before the start of World War II, barracks were built in Wentorf that housed over 3000 soldiers.

Since the local election on 6 May 2018, the 23 seats in the municipal council have been distributed among the individual political parties as follows: Blazon: "In gold, a six-spoke black wagon wheel under a green diamond wreath in the head of the shield.

It is reminiscent of the traditional community services that blacksmiths owed to their ruler for centuries, of the farmers' timber industry and the trade and transit traffic on the former freight route between Lübeck and Hamburg, today's federal highway B207.

The green diamond wreath in the shield head is placed above the wagon wheel and referencing the history of Wentorf.

Coming from Bergedorf, it connects Wentorf with the neighbouring villages Börnsen, Dassendorf and Schwarzenbek with its final stop in Mölln.