
King William Street is a street in the City of London, the historic nucleus and modern financial centre of London. It is a two-way street linking Lombard Street, at its northern end, with London Bridge, which marks the start of the start of the A3 route to Portsmouth.

King William Street runs from its northern end at a junction with Lombard Street by the church of St Mary Woolnoth, southeast to Monument junction, where it meets Gracechurch Street and Cannon Street. King William Street then continues south into London Bridge. The nearest London Underground stations are Bank and Monument;[1] the former King William Street station was once sited on the road, at the corner of Monument Street.
The road was built between 1829 and 1835 and is named after the reigning monarch of the time, King William IV.[2] From 1844 to 1936 a Statue of William IV sat on a column in the street before being relocated to King William Walk in Greenwich. In 1902 King William Street was the scene of the fatal stabbing of Arthur Reginald Baker by his lover Kitty Byron, at an entrance to the Lombard Street post office which at that time was located on King William Street. Today, it houses a number of investment banks and City firms.

キング・ウィリアム・ストリートは、 T・S・エリオットの詩『荒地』に登場する。60行目から68行目は以下の通り。
冬の夜明けの茶色い霧の下、非現実的な街、ロンドン橋 を渡る群衆、あまりにも多く、 死がこれほど多くの人々を滅ぼしたとは思いもよらなかった。 短く、まばらなため息が漏れ、 男たちは皆、足元に視線を落としていた。 丘を上り、キング・ウィリアム・ストリートを下り、聖メアリー・ウールノス教会が9時の最後の鐘を鳴らす、静寂の時を刻む 場所へと流れて いった。
この部分を執筆した当時、エリオットは市内の銀行に勤務していた。
北緯51度30分34秒、西経0度5分13秒/北緯51.50944度、西経0.08694度/北緯51.50944度、西経-0.08694度