Putnam Township is one of twenty townships in Fayette County, Iowa, USA. As of the 2010 census, its population was 313.

According to the United States Census Bureau, Putnam Township covers an area of 36.56 square miles (94.69 square kilometers); of this, 36.54 square miles (94.63 square kilometers, 99.94 percent) is land and 0.02 square miles (0.06 square kilometers, 0.06 percent) is water.

• Maryville at 42°41′16″N 91°38′44″W / 42.687762°N 91.645432°W / 42.687762; -91.645432

(This list is based on USGS data and may include former settlements.)

• Fairfield Township (north)
• Sperry Township, Clayton County (northeast)
• Cass Township, Clayton County (east)
• Richland Township, Delaware County (southeast)
• Madison Township, Buchanan County (south)
• Buffalo Township, Buchanan County (southwest)
• Scott Township (west)
• Smithfield Township (northwest)

The township contains Union Cemetery.

• Iowa Highway 3
• Iowa Highway 187

• Oelwein Community School District
• Starmont Community School District

• Iowa's 1st congressional district
• State House District 24
• State Senate District 12

• United States Census Bureau 2008 TIGER/Line Shapefiles
• United States Board on Geographic Names (GNIS)
• United States National Atlas

• US-Counties.com
• City-Data.com