Lujhu District () is a suburban district of Kaohsiung City, Taiwan.
After the handover of Taiwan from Japan to the Republic of China in 1945, Lujhu was organized as a rural township of Kaohsiung County. On 25 December 2010, Kaohsiung County was merged with Kaohsiung City and Lujhu was upgraded to a district of the city.
The district consists of Zhuhu, Dingliao, Xinda, Houxiang, Beiling, Shexi, Jiabei, Jianan, Xiakeng, Zhuyuan, Zhutung, Zhuxi, Wenbei, Wennan, SanyevYaliao, Shetung, Shezhong, Zhunan and Shenan Village.
The district is part of Kaohsiung City Constituency II electoral district for Legislative Yuan.