Eureka Township may refer to:
Eureka Township, Adair County, Iowa Eureka Township, Sac County, Iowa, in Sac County, Iowa Eureka Township, Barton County, Kansas Eureka Township, Greenwood County, Kansas Eureka Township, Kingman County, Kansas Eureka Township, Mitchell County, Kansas, in Mitchell County, Kansas Eureka Township, Rice County, Kansas, in Rice County, Kansas Eureka Township, Saline County, Kansas Eureka Township, Michigan Eureka Township, Dakota County, Minnesota Eureka Township, Valley County, Nebraska Eureka Township, Ward County, North Dakota, in Ward County, North Dakota Eureka Township, Aurora County, South Dakota, in Aurora County, South Dakota Eureka Township, Brookings County, South Dakota, in Brookings County, South Dakota