This page contains a collection of things that occurred in Kansas during the year 1878. Wherever possible, a link has been provided to a page containing more information.

Jun. 14, 1878 - The Mercury, the first newspaper published in Kingman county, by J. C. Martin, printed its first issue.

Sep. 30, 1878 - Dull Knife's band of Cheyenne killed 17 settlers in Decatur County.

Dec. 25, 1878 - The first marriage in Wellesville occurred, that which joined John C. Heffley to Miss Della Tinny.