Craig Criddle is a Professor Emeritus of Civil and Environmental Engineering at Stanford University and Senior Fellow in the Woods Institute for the Environment at Stanford. His specialty is microbial biotechnology for recovery of clean water, renewable energy, and renewable materials. He received his PhD from Stanford and began his academic career in 1989 at Michigan State University. After returning to Stanford in 1998, he has led research teams focused on groundwater bioremediation, biological wastewater treatment and reuse, and bioplastics from organic waste feedstocks.