John John Yeosock (March 18, 1937 – February 15, 2012) was a United States Army lieutenant general who commanded the Third United States Army during Operation Desert Shield and Operation Desert Storm.

Unable to get into West Point due to bad eyesight, Yeosock joined the Reserve Officers' Training Corps at Pennsylvania State University, graduating in 1959 with a B.S.

When Iraq invaded Kuwait, the Third Army was sent to Saudi Arabia in the buildup of coalition forces protecting the Kingdom during Operation Desert Shield.

On February 19, 1991, he needed medical evacuation to Germany for emergency surgery, his command temporarily taken over by Lieutenant General Calvin Waller until his return to Saudi Arabia approximately ten days later.

Yeosock died on February 15, 2012, in Fayetteville, Georgia, aged 74, from lung cancer and is interred at Arlington National Cemetery.