Institution
- Solvay S.A.1
- Sorgenti Investment Partners1
- South Carolina State College1
- South Dakota State University1
- Southdown, Inc.1
- Southern Company Services1
- Southern Methodist University1
- Southern Vocational College1
- Southwest Texas State University1
- Southwestern Agricultural University1
- Speed Laboratory, Inc.1
- Spencer Kellogg and Sons, Inc. 1
- Sperry Rand (Corporation)1
- Sprague Electric Company1
- Springfield Technical High School1
- Squibb Institute for Medical Research1
- St. Benedict's College (Atchison, Kan.)1
- St. Louis Regional Commerce & Growth Association1
- St. Louis Regional Industrial Development Corporation1
- St. Louis Research Council1