VMX may refer to:
Computing Virtual Machine Extensions, instructions on processors with x86 virtualization AltiVec, a floating point and integer SIMD instruction set called VMX by IBM vMX 3D, an Ethernet router in the Juniper MX-Series by Juniper Networks .vmx, a filename extension for virtual machine configuration files used by VMware
Other uses Vintage motocross VMX (Voice Message Exchange), a voicemail company VMX (streaming service), also known as Vivamax, an online streaming service in the Philippines