The International Workshop on Graph Labeling (IWOGL) 2026 will take place at Universitas Indonesia, Depok, Indonesia. This IWOGL holds special significance as it dedicated to the memory of the late Mirka Miller, the visionary founder of IWOGL, honoring the 10^th anniversary of her passing. As we know, the late Mirka Miller was the initiated of IWOGL which the first workshop was held in University of Newcastle, Australia in 2003. This year is the 13^th IWOGL and had more than 20 years history.

IWOGL is a problem-oriented series of workshops with emphasis on informal discussion. The main themes of the workshop were the topics within the following areas, but are not limited to:

• Applications of graph labeling
• Graceful labeling and their variations
• Magic-type labeling
• Sum labeling and variations
• Prime and vertex prime labeling
• Binary labeling
• Average labeling
• Graph colorings
• Other Labeling