Johnson Co. Genealogy Forum read and post messages about your ancestors for this county
Johnson County Genealogical Society
Johnson County, KS Genweb Project a collection of online resources for genealogy researchers
Johnson County Message Board read and post messages with other genealogy researchers of this county
Johnson Co. Marriage Records 1870-1879
Johnson County Pensioners on the Rolls, January 1, 1883
Johnson County Tax & Land Records (mid 1850s)
Johnson Co. Pre 1930 Obituary Index
Johnson Co. Naturalization Records
Johnson Co, Linwood Pioneer Cemetery
The Tombstone Transcription Project - cemeteries for Johnson Co. KS
US GenWeb Archives for Johnson County cemeteries, newspapers, wills, military rosters etc recorded online
World War II Honor List of Dead and Missing Personnel, Johnson County

Additional Resources

Kansas Newspaper Search enter your ancestor's name to instantly search the world's largest newspaper archive; over 12 million newspaper pages
Kansas Birth Records
Kansas Marriage Records
Kansas Divorce Records
Kansas Death Records