The Battle of Pyongyang (Japanese: ; Chinese: ) was the second major land battle of the First Sino-Japanese War. It took place on 15 September 1894 in Pyongyang, Korea between the forces of Meiji Japan and Qing China. It is sometimes referred to archaically in Western sources as the "Battle of Ping-yang". Between 13,000 and 15,000 Chinese troops of the Beiyang Army under overall command of General Ye Zhichao had arrived in Pyongyang on 4 August 1894, and had made extensive repairs to its ancient city walls, feeling itself secure in its superior numbers and in the strength of the defenses.

Prince Yamagata Aritomo's First Army of the Imperial Japanese Army converged on Pyongyang from several directions on 15 September 1894, and in the morning made a direct attack on the north and southeast corners of the walled city under very little cover. The Chinese defense was strong, but was eventually outmaneuvered by an unexpected flanking attack by the Japanese from the rear, costing the Chinese very heavy losses compared to the Japanese.

The First Sino-Japanese War (25 July 1894 – 17 April 1895) was a conflict between the Qing dynasty of China and the Empire of Japan primarily over influence in Joseon Korea. After more than six months of unbroken successes by Japanese land and naval forces and the loss of the port of Weihaiwei, the Qing government sued for peace in February 1895.

The war demonstrated the failure of the Qing dynasty's attempts to modernize its military and fend off threats to its sovereignty, especially when compared with Japan's successful Meiji Restoration. For the first time, regional dominance in East Asia shifted from China to Japan; the prestige of the Qing dynasty, along with the classical tradition in China, suffered a major blow. The humiliating loss of Korea as a tributary state sparked an unprecedented public outcry. Within China, the defeat was a catalyst for a series of political upheavals led by Sun Yat-sen and Kang Youwei, culminating in the 1911 Xinhai Revolution.

The war is commonly known in China as the War of Jiawu (Chinese: 甲午戰爭; pinyin: Jiǎwǔ Zhànzhēng), referring to the year (1894) as named under the traditional sexagenary system of years. In Japan, it is called the Japan–Qing War (Japanese: 日清戦争, Hepburn: Nisshin sensō). In Korea, where much of the war took place, it is called the Qing–Japan War (Korean: 청일전쟁; Hanja: 淸日戰爭).