| Office: | Senior Judge of the United States District Court for the Eastern District of Washington |
| Term Start: | May 1, 2008 |
| Term End: | September 2, 2021 |
| Office1: | Chief Judge of the United States District Court for the Eastern District of Washington |
| Term Start1: | 2000 |
| Term End1: | 2005 |
| Predecessor1: | William Fremming Nielsen |
| Successor1: | Robert H. Whaley |
| Office2: | Judge of the United States District Court for the Eastern District of Washington |
| Term Start2: | May 14, 1991 |
| Term End2: | May 1, 2008 |
| Appointer2: | George H. W. Bush |
| Predecessor2: | Seat established by 104 Stat. 5089 |
| Successor2: | Rosanna M. Peterson |
| Birth Name: | Frederick Leforest Van Sickle |
| Birth Date: | 31 January 1943 |
| Birth Place: | Superior, Wisconsin |
| Education: | University of Wisconsin (BS) University of Washington (JD) |
Frederick Leforest Van Sickle (January 31, 1943 – September 2, 2021) was a United States district judge of the United States District Court for the Eastern District of Washington.
Born in Superior, Wisconsin, Van Sickle received a Bachelor of Science degree from the University of Wisconsin in 1965 and a Juris Doctor from the University of Washington School of Law in 1968. Van Sickle was a First Lieutenant in the United States Army, JAG Corps, from 1968 to 1970. He was a prosecuting attorney of Douglas County, Washington from 1971 to 1975, also working in private practice during that time.[1]
Van Sickle was a judge on the Superior Court for Grant and Douglas Counties from 1975 to 1979, and for Chelan and Douglas Counties from 1979 to 1992.[1]
On March 21, 1991, Van Sickle was nominated by President George H. W. Bush to a new seat on the United States District Court for the Eastern District of Washington created by 104 Stat. 5089. He was confirmed by the United States Senate on May 9, 1991, and received his commission on May 14, 1991. He served as Chief Judge from 2000 to 2005, and assumed senior status on May 1, 2008.[1] He died on September 2, 2021, aged 78.[2]