a favor de SOPA:
- ABC
- BMI
- CBS
- Comcast/NBCUniversal
- Disney Publishing Worldwide, Inc.
- EMI Music Publishing
- Entertainment Software Association
- ESPN
- Major League Baseball
- Marvel Entertainment, LLC
- MasterCard Worldwide
- Motion Picture Association of America
- National Cable & Telecommunications Association
- National Football League
- News Corporation
- Random House
- Scholastic, Inc.
- Sony/ATV Music Publishing
- Sony Music Entertainment
- Time Warner
- Universal Music
- Universal Music Publishing Group
- Viacom
- Visa Inc.
- Warner Music Group
- Entertainment Software Association (Includes Nintendo, Microsoft Corporation, Electronic Arts, Sony - Computer Entertainment, NVIDIA and more)
- Entertainment Software Association (ESA)

En contra:
- Disqus
- AOL
- eBay
- Facebook
- Foursquare
- Google
- GrooveShark
- Kickstarter
- Mozilla
- PayPal
- Wikipedia
- Reddit
- Square
- The Huffington Post
- Craigslist
- LinkedIn
- OpenDNS
- Tumblr
- Twitter
- Yahoo
- Zynga