Ariyasu Momoka (有安杏果) is a Japanese idol under the agency Stardust Promotion. She is a member Momoiro Clover Z. Her official color is green. She is also a former member of the groups Power Age and Sister Rabbits.
- Name: Ariyasu Momoka (有安杏果)
- Nicknames: Momokaa~ (ももかぁ～), Ariyasu~ (ありやす～)
- Birthdate: March 15, 1995
- Birthplace: Saitama Prefecture, Japan
- Blood Type: A
- Hobby: Singing in the bathtub
- Skill: Dance
Ariyasu got her start in show business with only one year old in 1996 when she became a model under the agency C&T. Then in 2004, she became a second generation member for the group Sister Rabbits while being a member of EXILE's EXPG academy.
She switched agencies in 2008 and went to her current agency, Stardust Promotion. In 2009, Ariyasu became a member for the idol group Power Age. However, several months later, the group disbanded and she decided to join Momoiro Clover.
-  Gin no Angel
-  Doyou Tokushuu Dorama Shijou no Koi ~Ai wa Umi wo Koete~
-  Suntory Mystery Taishou Special Toki no Nagisa
-  Getsuyou Mystery Gekijou Pet Sitter Sawaguchi Hanako no Jikenbo
-  Kayou Suspense Gekijou
-  SMAP x SMAP Tokubetsu Hen Saranheyo Ai no Gekijou no Ai no Uta "Kenbo Haseyo ~Shiawase ni Nare yo~"
-  Hamidashi Keiji Jonetsu Kei (ep. 359)
-  Kindaichi Shonen no Jikenbo SP
-  Okusama wa Keishi Sokan
-  Gakincho -Return Kids-
- [2004 ~ 2005] Ponki Kids 21
-  Hayashi Asuka - Chiisa Kimono
-  SMAP - Tomodachi e ~Say What You Will~
-  EXILE - Choo Choo Train
-  EXILE - Kinga Detsutou 999
- Even though Ariyasu born in Saitama Prefecture, she can speak the Kansai dialect since her parents are Kansai natives.
- Since 1998 until 2009 she has appeared in more than 20 commercials.