Title

Vítáme Vás! (We welcome you!)

Research and connect with families from the Czech and Slovak ancestral lands.

CGSI focuses on the areas of present-day Czech Republic and Slovakia. This includes Czech (Bohemian), German-Bohemian (Böhmisch), Hungarian, Jewish, Moravian, Rusyn (Ruthenian), Silesian, and Slovak ancestry.

CGSI has over 2,000 members residing in the United States, Canada, Czech Republic, Slovakia, and other countries, providing a vast networking opportunity to learn and share information, and connect with fellow members.

Czechoslovak Genealogical Society International (CGSI) wants to help you research and connect with your family history.

We are dedicated to genealogical research and interest in descendants of ethnic groups with roots from the Czech and Slovak ancestral lands of Central Europe.

Why Join?

Purchase a Membership

Czech and Slovak Republic (Outlines with Maps)

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News & Events

Now Available on CGSI.org: The Denní Hlasatel Archive

To learn more about this unique resource, visit the Denní Hlasatel Archive home page.

Online Czech Genealogy Course

Are you interested in expanding your Czech genealogy skills? Beginning in January 2025, CGSI is partnering with Sokol Minnesota to offer the online course "Genealogie; hledáme své předky (Genealogy: Looking for Our Ancestors)" from the…

CGSI 2024 Annual Membership Meeting (Online Event)

Saturday, November 23, 2024 at 1:00 – 2:00pm (CDT)

Jan

25

TCGS "From the Czech Lands to Texas" Speaker Event [program]

Kickoff 2025 and attend Texas Czech Genealogical Society's "From the Czech Lands to Texas" speaker event in Caldwell, Texas.

Feb

01

CGSI Czech & Slovak Research Discussion Group (online event)

The next CGSI Czech & Slovak Research Discussion Group meets (virtually) online to share resources and discoveries among members. Moderated by CGSI Education Chair Iveta Blahútová. Please join us!

Apr

30

OGS 2025 Annual Conference – Ohio Genealogical Society [conference]

Ohio Genealogical Society (OGS) 2025 annual conference takes place in Sandusky, Ohio. Check out the lineup of featured speakers, presenters, and activities.