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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.

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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.

Czech and Slovak Republic (Outlines with Maps)
Sections

Early-bird registration is now open for the 2025 CGSI Genealogical & Cultural Conference.

A CGSI conference is a great place to learn, share, and connect with the genealogy, history, and culture of those from the Czech and Slovak ancestral lands of Central Europe. The format allows you to connect with information, resources, and other attendees via presentations and workshops, tours, networking opportunities, and social events.

Complete conference details are available in the Program and Registration Booklet, which you can download by clicking here.

What Members Say

Brno, Moravia
I credit CGSI for being able to access and decipher the records of my ancestors, as I found such helpful articles in your archives after joining - I will be forever grateful to your organization for that!
Jody D., Kennebunk, Maine, USA

News & Events

2025 CGSI Conference Registration Now Open!

Early-bird registration is now open for the 2025 CGSI Genealogical & Cultural Conference.

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…
Aug
02

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!
Oct
28

2025 CGSI Conference

Join us at the 2025 CGSI 20th Genealogical/Cultural Conference! The conference will be held October 28–November 1, 2025, at the…
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