Ruth Holzhausen

{{short description|German volleyball player (born 1959)}}

{{Infobox volleyball player

| name = Ruth Holzhausen

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| fullname = Ruth Holzhausen-Malkus

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| nationality = German

| birth_date = {{Birth date and age|1959|9|29}}

| birth_place = Berlin, Germany

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| height = 179 cm

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Ruth Holzhausen (born September 29, 1959) is a retired female volleyball player from Germany, who competed for West Germany at the 1984 Summer Olympics in Los Angeles, United States. There finished sixth with the national squad after a 3-0 loss in the fifth place playoff against South Korea. She is the mother of German long-jumper Lena Malkus.