- Memory BIST Division of iRoC
- Menta
- Mentor Embedded Systems Division
- Mentor Emulation Division
- Mentor Mechanical Analysis Division
- Mentor physical libraries
- Mercel AB
- Mercel AUTOSAR assets
- Meropa Inc.
- Meta Systems SARL
- Meta-Software Inc.
- Metamor Inc.
- MetaWare Inc.
- Methodics, Inc.
- Micro Magic EDA assets
- Micro Magic, Inc.
- Microchip Technology, Inc.
- Microcode Engineering Inc.
- Microcosm Technologies Inc.
- Microelectronics Research & Development Ltd.
- Micrologic Solutions Limited
- Microsemi Corporation
- MicroSim Corp
- Microtec Research, Inc.
- Microtronic
- Mint Technology
- MIPI Alliance
- MIPS Analog Business Group
- MIPS Technologies
- Mirabilis Design
- Missing Link Tools
- MITRE Engenuity
- Mitsui Bussan Digital Corp
- Mixel, Inc.
- Mobiveil, Inc.
- Model Technology Inc.
- Modus Test
- Mojave, Inc.
- MonolithIC 3D Inc
- Monterey Design Systems, Inc.
- Moortec Semiconductor Ltd.
- Morfik Technology Pty Ltd.
- MOSAID SIP assets
- MOSAID Technologies Inc.
- Moscape, Inc
- MOSIS
- Mosys SerDes IP
- MoSys, Inc.
- Movellus
- Multicore Association
