1970 Washington State Cougars football team

The 1970 Washington State Cougars football team was an American football team that represented Washington State University in the Pacific-8 Conference (Pac-8) during the 1970 NCAA University Division football season. In their third season under head coach Jim Sweeney, the Cougars compiled a 1–10 record (0–7 in Pac-8, last), and were outscored 460 to 231.

The team's statistical leaders included Ty Paine with 1,581 passing yards, Bob Ewen with 667 rushing yards, and Ed Armstrong with 488 receiving yards.

Due to the fire at Rogers Field in April, all home games were played at Joe Albi Stadium in Spokane in 1970 and 1971. AstroTurf was installed there in the summer of 1970.

For the second straight year, Washington State played a full conference schedule and went winless. The only victory was in September over neighbor Idaho in the Battle of the Palouse, the sole meeting in a three-year span. The annual rivalry game was not played the previous season (and in 1971) to allow the Cougars to schedule all seven conference opponents.

All-conference
One Washington State offensive lineman, junior guard Steve Busch, was named to the All-Pac-8 team. On the second team (honorable mention) was senior cornerback Lionel Thomas. Busch made the first team again as a senior in 1971.