Operation Mobilisation is a Christian missionary organisation founded by George Verwer to mobilise young people to live and share the Gospel of Jesus. OM, (Operation Mobilisation) , started in Mexico and had spread to Europe and India by 1963.

OM currently has 6,800 people working in 118 countries around the world, seeking to "see vibrant communities of Jesus followers among the least reached". OM's core values are knowing and glorifying God, living in submission to God's Word, being people of grace & integrity, serving sacrificially, loving & valuing people, evangelising the world, reflecting the diversity of the body of Christ, global intercession, and esteeming the church. They accomplish these core values through church planting, evangelism, relief and development, justice, and mentoring and discipleship.