Russell Mark Fulcher (born March 9, 1962) is an American businessman and politician serving as the U.S. representative for Idaho's 1st congressional district since 2019. A member of the Republican Party, he represented the 21st district in the Idaho Senate from 2005 to 2012 and the 22nd district from 2012 until 2014.

Fulcher ran for governor of Idaho in 2014, unsuccessfully challenging incumbent Butch Otter in the primary. He was elected to the U.S. House of Representatives in 2018, succeeding incumbent Raúl Labrador, who retired from Congress to run, unsuccessfully, for governor of Idaho.

Fulcher is a member of the Freedom Caucus.

A fourth-generation Idahoan, Fulcher was born in Boise, Idaho, but grew up on a dairy farm in Meridian, Idaho. He received both a bachelor's and master's degree in business administration from Boise State University in 1984 and 1988, respectively. He also completed a course on electronic engineering through Micron Technology.

While a member of the Idaho legislature, Fulcher worked as a broker in the commercial real estate business. Before that, he was involved in Idaho's technology industry. Fulcher spent much of that time working in international business development with Micron Technology.^{[citation needed]}

In 2005, Governor Dirk Kempthorne appointed Fulcher to the Idaho State Senate, representing the 21st legislative district, which encompasses large parts of Boise, Meridian and Kuna, to replace Jack Noble, who resigned after a conflict of interest. Fulcher was first elected in 2006 and served through 2012.

Fulcher represented District 22 in the Idaho Senate from 2012 to 2014. He served as Majority Caucus Leader from 2008 to 2012 and from 2013 to 2014.

Fulcher served on the following committees: