As co-chair of the Gill Foundation’s board of directors, Scott Miller helps direct the foundation’s giving strategies to advance LGBTQ equality and ensure equal opportunity for all Americans. Together with his husband, Tim Gill, Scott has helped the Gill Foundation become the largest private contributor to LGBTQ equality in history, having donated more than $446 million to the cause. During the COVID-19 pandemic, Miller led efforts to provide more than 5.6 million meals to alleviate food insecurity for tens of thousands of Coloradans in need.

In 2021, Miller was appointed Ambassador of the United States to the Swiss Confederation and the Principality of Liechtenstein by President Joe Biden, and was unanimously confirmed by the U.S. Senate. During his tenure, Miller strengthened strategic and economic ties with both countries, supported Liechtenstein’s first Pride celebration and its adoption of marriage equality, and played a pivotal role in helping to establish the Afghan Trust Fund in Switzerland to distribute Afghan central bank assets for the benefit of the Afghan people.

Miller also played a key role in Operation Fly Formula, coordinating U.S. government efforts to address the baby formula shortage crisis by expediting imports of safe, FDA-approved formula to American families.

Upon completing his diplomatic service, Miller was re-elected as board co-chair of the Gill Foundation in January 2025, where he continues to guide the foundation’s mission to secure lasting equality for LGBTQ people.

Earlier in his career, Miller worked in finance and management consulting, bringing a wealth of strategic and operational expertise to both his philanthropic and diplomatic endeavors. Miller holds a Bachelor of Science with honors in business administration from the University of Colorado Boulder. He lives in Denver, Colorado, with his husband, Tim.