List of integrated circuit manufacturers

The following is an incomplete list of notable integrated circuit (i.e. microchip) manufacturers. Some are in business, others are defunct and some are Fabless.

0–9

 * 3dfx Interactive (acquired by Nvidia in 2002)

A

 * Achronix
 * Actions Semiconductor
 * Adapteva
 * Agere Systems (now part of LSI Logic formerly part of Lucent, which was formerly part of AT&T)
 * Agilent Technologies (formerly part of Hewlett-Packard, spun off in 1999)
 * Airgo Networks (acquired by Qualcomm in 2006)
 * Alcatel
 * Alchip
 * Altera
 * Allegro Microsystems
 * Allwinner Technology
 * Alphamosaic (acquired by Broadcom in 2004)
 * AMD (Advanced Micro Devices; founded by ex-Fairchild employees)
 * Analog Devices
 * Apple Inc.
 * Applied Materials
 * Applied Micro Circuits Corporation (AMCC)
 * ARM
 * Asahi Kasei Microdevices (AKM)
 * AT&T
 * Atari
 * Atheros (acquired by Qualcomm in 2011)
 * ATI Technologies (Array Technologies Incorporated; acquired parts of Tseng Labs in 1997; in 2006, became a wholly owned subsidiary of AMD)
 * Atmel (co-founded by ex-Intel employee, now part of Microchip Technology)
 * Amkor Technology
 * ams AG (formerly known as austriamicrosystems AG and frequently still known as AMS (Austria Mikro Systeme))

B

 * Bourns, Inc.
 * Brite Semiconductor
 * Broadcom Corporation (acquired by Avago Technologies in 2016)
 * Broadcom Inc. (formerly Avago Technologies)
 * BroadLight
 * Burr-Brown Corporation (Acquired by Texas Instruments in 2000)

C

 * C-Cube Microsystems
 * Calxeda (re-emerged with Silver Lining Systems in 2014)
 * Cavium
 * CEITEC
 * Chips and Technologies (acquired by Intel in 1997)
 * CISC Semiconductor
 * Cirrus Logic
 * Corsair
 * Club 3D (Formerly Colour Power)
 * Commodore Semiconductor Group (formerly MOS Technologies)
 * Conexant (formerly Rockwell Semiconductor, acquired by Synaptics in 2017)
 * Crocus Technology
 * CSR plc (formerly Cambridge Silicon Radio)
 * Cypress Semiconductor Now operating as subsidiary of Infineon Technologies.It was (acquired by Infineon Technologies in 2019).

D

 * D-Wave Systems
 * Dallas Semiconductor (acquired by Maxim Integrated in 2001)
 * Dynex Semiconductor

E

 * Elmos Semiconductor
 * EM Microelectronic-Marin (subsidiary of The Swatch Group)
 * Entropic Communications (acquired by MaxLinear in 2015)
 * Epistar
 * Epson
 * ESS Technology
 * Everspin Technologies
 * Exar Corporation (established as a subsidiary of Rohm Semiconductor, acquired by MaxLinear in 2017)
 * EZchip Semiconductor (acquired by Mellanox Technologies in 2016)

F

 * Fagor (owned by Mondragon Corporation)
 * Fairchild Semiconductor
 * Ferranti
 * Freescale Semiconductor (formerly part of Motorola, merged in 2015 with NXP)
 * FTDI
 * Fujifilm
 * Fujitsu

G

 * G.Skill
 * General Instrument (semiconductor division acquired by Vishay Intertechnology in 2001)
 * Genesis Microchip
 * GlobalFoundries
 * GM Components Holdings
 * GMT Microelectronics (formerly Commodore Semiconductor Group)
 * GreenPeak Technologies (acquired by Qorvo in 2016)

H

 * Harris Semiconductor (acquired by Intersil)
 * HannStar Display Corporation
 * HiSilicon
 * Hitachi, Ltd.
 * Holtek

I

 * IBM (International Business Machines)
 * IM Flash Technologies (founded by Intel Corporation and Micron Technology, Inc.)
 * Imagination Technologies (acquired by Canyon Bridge in 2017)
 * Infineon Technologies (formerly part of Siemens)
 * InfoTM
 * Ingenic Semiconductor
 * Inmos
 * Inprocomm (acquired by MediaTek in 2005)
 * Integra Technologies
 * International Rectifier (now part of Infineon Technologies since 2015)
 * Integrated Device Technology
 * Intel (founded by ex-Fairchild employees)
 * Intersil (formerly Harris Semiconductor, bought by Renesas in 2017)
 * Intrinsity (acquired by Apple Inc. in 2010)
 * InvenSense (acquired by TDK in 2016)
 * Industrial Technology Research Institute
 * IXYS Corporation

J

 * Jazz Semiconductor (acquired by Tower Semiconductor in 2008)
 * Jennic Limited (acquired by NXP Semiconductors in 2010)

K

 * Kawasaki
 * Kyocera
 * Kingston Technology

L

 * Lattice Semiconductor
 * Leadcore Technology
 * Linear Technology (now under Analog Devices since 2016)
 * Littelfuse
 * Lantiq (acquired by Intel in 2015)
 * LSI Logic (founded by ex-Fairchild employees)

M

 * M-Labs (formerly known as the Milkymist project)
 * M-Systems (acquired by SanDisk in 2006)
 * Macronix
 * Magnum Semiconductor (acquired by GigOptix in 2016)
 * MaxLinear
 * Marvell Technology Group
 * MediaTek
 * Mellanox Technologies
 * Mentor Graphics (subsidiary of Siemens)
 * Microchip Technology
 * Micron Technology
 * Microsemi (acquired by Microchip Technology in 2018)
 * MicroSystems International
 * Mindspeed Technologies (spun off from Conexant)
 * MIPS Technologies (acquired by Imagination Technologies in 2013, Imagination Technologies later sold the company to Tallwood Venture Capital in 2017)
 * Mitsubishi Electric
 * MOS Technology (founded by Allen-Bradley)
 * Mosel Vitelic Corporation (defunct in 2009)
 * Mosel Vitelic Inc
 * Mostek (founded by ex-Texas Instruments employees)
 * Motorola (semiconductor division spun off as Freescale Semiconductor)

N

 * National Semiconductor (aka "NatSemi"; founded by ex-Fairchild employees, bought in 2011 by Texas Instruments)
 * NEC (semiconductor division merged with Renesas Electronics)
 * NetLogic Microsystems (acquired by Broadcom Corporation in 2012)
 * Nexperia (Spin-off from NXP, founded in 2017)
 * Nichia
 * Nintendo
 * Nordic Semiconductor (formerly known as Nordic VLSI)
 * Novellus Systems
 * Nvidia (acquired IP of competitor 3dfx in 2000; 3dfx was co-founded by ex-SGI employee)
 * NXP Semiconductors (formerly part of Philips)
 * Number Nine Visual Technology (acquired by S3 Graphics in 2000)
 * Nuvoton (Winbond spun off)

O

 * OSRAM
 * Oak Technology (acquired by Zoran Corporation in 2003)
 * ON Semiconductor (formerly part of Motorola)
 * Open-Silicon

P

 * Phison
 * Parallax Inc.
 * Philips Semiconductors (spun off as NXP Semiconductors)
 * Plessey
 * PLX Technology (acquired by Avago Technologies, now Broadcom Inc.)
 * PMC-Sierra (from the former Pacific Microelectronics Centre and Sierra Semiconductor, the latter co-founded by ex-NatSemi employee)
 * Panasonic (formerly known as Matsushita Electric Industrial Co., Ltd.)
 * PortalPlayer (acquired by Nvidia in 2007)
 * Powerchip Semiconductor
 * Precision Monolithics (Acquired by Analog Devices in 1990)

Q

 * Qualcomm
 * Qimonda (split off from Infineon Technologies AG which was formerly part of Siemens)
 * Qorvo

R

 * Rabbit Semiconductor (acquired by Digi International in 2006)
 * Ralink (acquired by MediaTek in 2011)
 * Rambus
 * RCA
 * Realtek
 * Renesas Technology (joint venture of Hitachi and Mitsubishi Electric)
 * Reticon
 * RF Micro Devices (merged with TriQuint Semiconductor to form Qorvo in 2015)
 * Ricoh
 * Rise Technology (acquired by Silicon Integrated Systems in 1999)
 * Robert Bosch
 * Rockchip
 * Rockwell Semiconductor (spun off as Conexant)
 * Rohm
 * Roland Corporation
 * RMI Corporation (Merged into NetLogic Microsystems, then Broadcom)

S

 * Samsung Electronics (Semiconductor division)
 * Sanyo (Semiconductor division sold off to ON Semiconductor in 2010)
 * Sanken Electric
 * SanDisk (acquired by Western Digital in 2016)
 * Seagate Technology
 * Sensonor (acquired by Infineon Technologies in 2012)
 * Sharp Corporation (Sharp Semiconductor division)
 * SiFive
 * Signetics (acquired by Philips (now NXP) in 1975)
 * Sigma Designs
 * SigmaTel (acquired by Freescale which merged with NXP in 2015)
 * Silicon Motion
 * Silicon Systems (now part of Western Digital)
 * Silicon Labs
 * Silicon Image (acquired by Lattice Semiconductor in 2015)
 * Silicon Integrated Systems
 * SK Hynix
 * Skyworks Solutions (spun-off from Conexant)
 * Sony (Semiconductor division)
 * SMIC
 * Spansion
 * Spreadtrum
 * STMicroelectronics (formerly SGS Thomson)
 * ST-Ericsson (defunct in 2013)
 * Sun Microsystems (acquired by Oracle Corporation in 2010)
 * Symbios Logic (sold to Hyundai Electronics in 1995)
 * Synertek

T

 * Tamarack Microelectronics (merged with IC Plus in 2002)
 * TDK
 * Telechips
 * Tektronix (semiconductor division sold to Maxim Integrated in 1994)
 * Teridian Semiconductor
 * Texas Instruments
 * Tilera (acquired by EZchip Semiconductor, EZchip was later acquired by Mellanox Technologies)
 * Toshiba
 * Tower Semiconductor
 * Transmeta (acquired by Novafora in 2009)
 * TriQuint Semiconductor (merged with RF Micro Devices to form Qorvo in 2015)
 * Truly International Holdings
 * Trumpf
 * TSMC (Taiwan Semiconductor Manufacturing Company. semiconductor foundry)

U

 * UMC (company)
 * u-blox
 * Ubicom (formerly Scenix Semiconductor, acquired by Qualcomm Atheros in 2012)
 * UNISOC

V

 * Vanguard International Semiconductor Corporation
 * VIA Technologies (founded by ex-Intel employee, part of Formosa Plastics Group)
 * Vimicro
 * Virata Corporation (merged with Conexant in 2004)
 * Vishay Intertechnology
 * Vivante Corporation
 * Volterra Semiconductor

W

 * Wacom
 * Western Digital
 * Wilocity (acquired by Qualcomm Atheros in 2014)
 * Winbond
 * Wolfson Microelectronics
 * WonderMedia

X

 * X-Fab
 * Xelerated (acquired by Marvell Technology Group in 2012)
 * Xilinx (founded by ex-ZiLOG employee)
 * XMOS

Y

 * Yamaha Corporation

Z

 * ZiLOG (founded by ex-Intel employees, part of Exxon 1980–89; now owned by TPG)
 * Zoran Corporation (merged with CSR (company) PLC which was later merged to Qualcomm)