Vítáme Vás! (We welcome you!)

Welcome to the Czechoslovak Genealogical Society International (CGSI)! Our purposes include promoting genealogical research and creating an interest in ancestry and heritage among descendants of ethnic groups who comprised the former nation of Czechoslovakia, including Bohemian (Czech), German-Bohemian (Bohmisch), Hungarian, Moravian, Ruthenian (Rusyn), Silesian, Slovakian, and those of Jewish ancestry.


Your CGSI membership gives you the best tools for genealogical research:

Membership starts at $35 per year. Three ways to join or renew:

Family Certificates

If you are a descendant of immigrants from Czechoslovakia, consider gifting yourself with a Family Certificate.

Did your ancestors come to North America….

  • before 1871? Apply for a Pioneer Family Certificate.
  • more than 100 years ago? Apply for a Century Family Certificate.

Learn more about it.

Then, download directions & an application form.

In the Store

There are currently no items of this type for sale.

Nase rodina

A quarterly publication for CGSI members

Nase rodina (Our Family) is published quarterly by the Czechoslovak Genealogical Society International (CGSI). This publication brings you themed issues on genealogy topics.