SJU

• Saint John's University (disambiguation), the name of several institutions
• Saint Joseph's University, a private university in Philadelphia, Pennsylvania, United States
• Sejong University, a private university in Seoul, South Korea
• Shanghai Jiao Tong University, a public university in Shanghai, China
• Southwest Jiaotong University, a public university in Chengdu, Sichuan, China
• St. Jerome's University, a public university in Waterloo, Ontario, Canada

• Luis Muñoz Marín International Airport, in Carolina, Puerto Rico, IATA airport code SJU
• Sju Hundred, a former subdivision of Uppland, Sweden, Northern Europe
• Ume Sámi, the ISO 639-3 language code {{mono|sju}}

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