Charles Jonas (born Karel Jonáš, October 24, 1840 – January 15, 1896) was a Czech American immigrant, journalist, linguist, and political activist.

[1][2] His former home in Racine, Wisconsin, the Karel Jonas House is now listed in the National Register of Historic Places.

A strong Czech nationalist and friend of Vojtěch Náprstek, he fled Bohemia in 1860 after clashes with the authorities, moving via Bremen to London, where he continued to work as a journalist.

Field was not a candidate for re-election), with 1229 votes to 760 for Republican Edward Gillen; he was assigned to the standing committees on the judiciary and on education.

In 1890 he was elected 16th Lieutenant Governor of Wisconsin with a plurality of 34,974 in a four-way race, well ahead of his running mate, Milwaukee mayor George Wilbur Peck.