Robert Alan Krieger (born January 8, 1946)[1] is an American guitarist and founding member of the rock band the Doors.

[5][6] His father, Stuart "Stu" Krieger, was an engineer and was a fan of classical music, while his mother, Marilyn Ann (née Shapiro), enjoyed "Frank Sinatra and stuff like that".

His musical development included listening to guitarists Wes Montgomery, Albert King, and Larry Carlton who influenced his style.

At an early Doors rehearsal, Morrison heard Krieger playing bottleneck guitar and initially wanted the technique featured on every song on the first album.

[12] Krieger's fingerstyle approach to the electric guitar, broad musical tastes, and songwriting helped establish the Doors as a successful rock band in the 1960s.

In 1982, Krieger appeared on four tracks of the album Panic Station by the Los Angeles group The Acid Casualties ("Shadow Street," "Solid Sound," "Armies of the Sun," and "She's a Lost Soul").

[23] On December 31, 2013, Krieger played alongside Southern rock band Gov't Mule at the Beacon Theatre (New York City).

On August 29, 2018, Krieger joined Alice in Chains onstage at the Hollywood Palladium in Los Angeles to close out their sold-out concert with a performance of their hit song "Rooster".

[26] On October 12, 2021, Krieger released a memoir Set the Night on Fire: Living, Dying, and Playing Guitar With the Doors, co-written with author and musician Jeff Penalty Alulis.