The 2014 Summer Youth Olympics, officially known as the II Summer Youth Olympic Games Chinese: 第二届夏季青年奧林匹克运动会; pinyin: Dì'èrjiè Xiàjì Qīngnián Àolínpǐkè Yùndònghuì, and commonly known as Nanjing 2014, were the second Summer Youth Olympic Games, an international sports, education and cultural festival for teenagers, held from 16 to 28 August 2014 in Nanjing, China. These were the first Youth Olympic Games held in China, making it the first country to host both regular and Youth Olympics following the 2008 Summer Olympics in Beijing.

The Youth Olympic Games (YOG) is an international multi-sport event for athletes between 15 and 18 years old, organized by the International Olympic Committee. The games are held every four years in staggered summer and winter events consistent with the current Olympic Games format, though in reverse order with the Olympic Winter Games held in leap years instead of the Summer Olympic Games. The first summer version was held in Singapore from 14 to 26 August 2010 while the first winter version was held in Innsbruck, Austria from 13 to 22 January 2012.