The 26th president of University of the Pacific, California's first university. #PacificProud

Stockton | Sacramento | S.F.
Joined April 2010
Celebrating former @UOPacific Board of Regents Chair Mary-Elizabeth Eberhardt, this year’s recipient of the Goodwill Helping Hands Award for her lifelong service to the Stockton community. #PacificProud
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Enjoying dinner at the President’s Residence with seven of our new first-year students from NorCal, SoCal, Michigan, Utah and Tennessee. First Lady Jean Callahan, First-Year Experience Director Jeff Hole and I love hearing about their experiences two months into their University of the Pacific journey. #PacificProud
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.@Pacific_Golf defeats an 18-team field for a near wire-to-wire victory at the home @VisitStockton Pacific Invitational at The Reserve at Spanos Park. Paced by 2-time tournament individual champion Felix Bouchard (-11) and third-place finisher Will Tanaka (-8), @PacificTigers (-20) downed 2nd place Nevada by 4 strokes in a field that included current & future @WCCsports members USF, St. Mary’s, Denver, Seattle, UCSD and UCSB. It’s the Tigers 5th tournament championship in the past 3 years and back-to-back Pacific Invitational titles. #wccsports #PacificProud
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Wonderful Club Fair on the @DeRosaCenter lawn featuring dozens of our 150+ student-led orgs at @UOPacific. Our array of student organizations – from professional, social and recreational to cultural, sports and faith-based – are fantastic ways for students to engage with campus beyond the classrooms, studios and laboratories. #PacificProud
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More than 5,000 @UOPacific alumni, students, family, faculty, staff & friends celebrated the 175th anniversary of California’s first university at Homecoming and Family Weekend, featuring reunions, tours, games, Orange and Black Ball, Taste of Pacific with 21 alumni-led wineries, a concert with @BrubeckBrothers Quartet led by Dan & @ChrisBrubeck, sons of the late, great Pacific alumnus @TheDaveBrubeck, and capping off with a #49ers Tailgate on historic Knoles Lawn with NFL Hall of Famer Bryant Young, part of our unique partnership as the Official Higher Education Partner of the @49ers. #PacificProud pacific.edu/pacific-newsroom…
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The perfect end to #Homecoming2026: A @49ers tailgate on historic Knoles Lawn with hundreds of @UOPacific alumni, students, parents, faculty and staff cheering on the #49ers in a thrilling 32-29 victory side-by-side with @SourdoughSam49, @UoPowerCat, Tommy the Tiger, Gold Rush cheerleaders and one of the greatest defenders who ever played – @ProFootballHOFer Bryant Young. All part of our 175th year celebration as California’s first university and our new role as the Official Higher Education Partner of the 49ers. #49ersfaithful #PacificProud
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A magical day at @UOPacific as we continue the #Homecoming2026 celebration of our 175th anniversary as California’s first university. A picture-perfect day filled with old and new friends, reunions, tours, games, Taste of Pacific with 21 alumni-owned and/or led vineyards and fantastic evening concert on historic Knoles Lawn by the amazingly talented @BrubeckBrothers Quartet led by Chris and Dan, sons of the late, great Pacific alumnus Dave Brubeck. Our special Homecoming and Family Weekend wraps up today with our Faculty Mentor Awards brunch followed by No. 8 nationally ranked @UOPWaterPoloU taking on No. 11 LMU and a huge @49ers Tailgate featuring #49er giveaways and special appearances by Sourdough Sam, the Gold Rush cheer team and #NFL Hall of Famer Bryant Young. #PacificProud
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Fabulous Day 1 kickoff to @UOPacific's Homecoming and Family Weekend celebrating our 175th birthday as California’s first university, wrapping with the Orange and Black Ball fundraiser for @PacificTigers featuring Board Chair Leticia Robles blowing out the candle on giant birthday cake to reveal VP Scott Biedermann! Plus the return of Tommy the Tiger after more than a quarter century! Can’t wait for today’s festivities with reunions, tours, @Pacificwvball, @PacificWSoccer, Taste of Pacific wine reception and evening concert featuring the @BrubeckBrothers, proud sons of Pacific legendary alumnus @TheDaveBrubeck. #PacificProud
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.@UOPWaterPoloU got @UOPacific Homecoming and Family Weekend off to a great start with a 13-10 road W over San Jose State in @WCCsports opener. The No. 8 nationally ranked @PacificTigers are back home Sunday to help wrap up #homecoming weekend v No. 11 LMU. #GoTyges #wccsports #PacificProud
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Celebrating 20 years of the Osher Lifelong Learning Institute at @UOPacific. OLLI provides learning opportunities in the arts, culture, health and wellness, history, technology and more. #lifelonglearning #PacificProud pacific.edu/pacific-newsroom…
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Join us for a very special 3-day #Homecoming and #FamilyWeekend at @UOPacific as we celebrate our 175th anniversary as California’s first university. The fun begins Friday with campus tours, the Craft Beer Fest, Band Frolic Flashback, Toy Story 5 under the stars and @PacificTigers' Orange and Black Ball followed by an action-packed weekend and a special surprise guest returning to campus for the first time in more than 25 years. Join us! #PacificProud pacific.edu/alumni/homecomin…
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.@UOPacific is one of 94 universities worldwide to earn the top recognition by @ACSMNews to make physical activity a central part of campus health and wellness. Thanks to Prof Alexis King for leading our “Exercise is Medicine” initiative. #PacificProud pacific.edu/pacific-newsroom…
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.@JeanAtPacific and I joined 17 @UOPacific students for a quintessentially Pacific experiential learning trip this weekend: Exploring @YosemiteNPS with leading scholars. Mike Wurtz, one of the world’s foremost experts on #johnmuir who oversees our Muir archives, explained the naturalist’s role in preserving #yosemite and founding the @SierraClub while Dr. Lydia Fox, a superb geology professor, explained how the magnificent granite rocks were formed millions of years ago. A special treat: Robert Hanna, Muir’s great-great-grandson, and Ted Roosevelt IV, Teddy Rooosevelt’s great-grandson, recreated the historic 3-day camping trip their ancestors took in 1903, which helped fuel the President’s work to expand the national park system. Our students are so fortunate to have these kinds of experiences – less than 3 hours from campus – and work with such fantastic faculty. #PacificProud
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.@PacificTigers are in the midst of an epic weekend: 24 hours after Men’s @PacificXCT won the Pacific Invitational, both women’s and men’s @uopswimanddive squads win their home invitational at the Eberhardt Aquatics Center – the first home sweep since 2018. Congrats to our outstanding Tiger swimmers and Head Coach @coachkatelyne. #GoTyges #PacificProud
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In just its second year, Men's @PacificXCT wins the Pacific invitational, paced by first-place finisher Jett Davenport and Top 5 finishers freshmen Braden Himley and Thomas Capelli. The women’s squad took third place in the home race at @mickegrove. Congrats to our @PacificTigers runners and first-year head coach Cherise Roberts. #GoTyges! #PacificProud
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Women's and men's @uopswimanddive teams kick off the new season today hosting Stanford, UC Santa Barbara, Cal State Bakersfield, Saint Mary's and UC Davis in the PAC Invite at Eberhardt Aquatics Center while @PacificTigers women’s and men’s @PacificXCT squads host the annual Pacific Invitational at @mickegrove. #GoTyges #PacificProud
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Getting a sneak peek at our newest @PacificTigers team: @PacificMensVB working hard at Spanos Center under the watchful eye of head coach Devin Young. #GoTyges #PacificProud
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Excited to welcome back to @UOPacific Jose Hernandez, our 1984 graduate whose Pacific journey led him from migrant farmworker to space. The former #NASA #astronaut will be interviewed Nov. 5 by VP Scott Biedermann as part of our Presidential Speaker Series and our 175th anniversary celebration. @Astro_Jose #PacificProud pacific.edu/pacific-newsroom…
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Pacific President Christopher Callahan retweeted
Proud of our partnership with @DignityHealth and look forward to continued growth and engagement! The patches turned out great too😎 pacifictigers.com/news/2026/…
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