| Pi Tau Sigma | |
|---|---|
| ΠΤΣ | |
 | |
| Founded | March 16, 1915 University of Illinois Urbana-Champaign |
| Type | Honor Society |
| Affiliation | ACHS |
| Status | Active |
| Emphasis | Mechanical engineering |
| Scope | International |
| Pillars | Integrity, Service, and Leadership |
| Member badge |  |
| Colors | Murrey and Azure |
| Symbol | Carnot cycle |
| Flower | White Rose |
| Publication | The Condenser |
| Chapters | 182 |
| Members | 118,000+ lifetime |
| Headquarters | United States |
| Website | pitausigma |
Pi Tau Sigma (ΠΤΣ) is an international honor society in the field of mechanical engineering. The society was established in 1915 at the University of Illinois. It has 182 chapters.