Theta Pi Sigma (ΘΠΣ), formerly known as Delta Lambda Psi (ΔΛΨ), was started by Marc Garcia in 2005 at UC Santa Cruz. There was a lawsuit with Delta Lambda Phi over the use of the acronym DLP - Delta Lambda Psi and agreed to become TPS - Theta Pi Sigma. Also, Theta Pi Sigma - Alpha Chapter in 2015 has voted and banned the use of the misleading word "frarority" due to the potential social and legal ramifications of the use of gendered language because Theta Pi Sigma is registered as a fraternity with SOAR. Theta Pi Sigma is the world's first regional queer-focused, gender-neutral fraternity on the verge of becoming national with international aspirations.
The purpose and objective of Theta Pi Sigma is to strengthen Greek life at the University of California, Santa Cruz by providing a vehicle for positive leadership, change, and growth in the queer, transsexual, transgender, questioning, pansexual, lesbian, intersex, gender-queer, gay, bisexual, asexual and ally communities. It is their intention to provide further opportunity to obtain a well-rounded educational experience by offering leadership skills and the exposure needed to succeed financially, academically, socially, and culturally.
The first chapter of Theta Pi Sigma was founded by Marc Garcia in 2005 at the University of California, Santa Cruz.
The second chapter of Theta Pi Sigma was founded in 2012 at the Northeastern University of Illinois.
The third chapter of Theta Pi Sigma was founded at the University of Oregon.
The fourth chapter of Theta Pi Sigma was founded in the fall of 2013 at the University of Maryland, College Park.