加里波利之战（英文：Battle of Gallipoli），又称达达尼尔战役（Dardanelles Champagne），是第一次世界大战中土耳其加里波利（Gelibolu）半岛的一场战役。它始于一个英国法国联盟的海军行动，目的是强行闯入达达尼尔海峡，打通博斯普鲁斯海峡，然后占领奥斯曼帝国首都伊斯坦布尔。在土耳其此战称为恰纳卡莱之战（土耳其语：Çanakkale Savaşlari）。

在此次登陆战中，协约国方面先后有50万士兵远渡重洋来到加里波利半岛。近十一个月的战斗后，留下约71,985死亡，96,937受伤。这场战役是一战中最著名的战役之一，也是至当时最大的一次海上登陆作战。澳大利亚与新西兰设澳纽军团节纪念4月25日登陆日期。

The Gallipoli Campaign, also known as the Dardanelles Campaign, the Battle of Gallipoli or the Battle of Çanakkale (Turkish:Çanakkale Savaşı), was a campaign of World War I that took place on the Gallipoli peninsula (Gelibolu in modern Turkey) in the Ottoman Empire between 25 April 1915 and 9 January 1916. The peninsula forms the northern bank of the Dardanelles, a strait that provided a sea route to the Russian Empire, one of the Allied powers during the war. Intending to secure it, Russia's allies Britain and France launched a naval attack followed by an amphibious landing on the peninsula, with the aim of capturing the Ottoman capital of Constantinople (modern Istanbul). The naval attack was repelled and after eight months' fighting, with many casualties on both sides, the land campaign was abandoned and the invasion force was withdrawn to Egypt.