According to survey conducted at Biglobe website, Nobuhiko Okamoto topped survey on cutest voice actor and voice actress.

Nobuhiko Okamoto, voice actor of Blue Exorcists’ Okumura Rin and Toaru Majutsu no Index II’s Accelerator, led the list with 1,079 out of 8,271 who voted. Far behind in second place is Kana Hanazawa (579) who voiced Mato Kuroi of Black Rock Shooter and Nadeko Sengoku of Nisemonogatari.

Rankings

1 Nobuhiko Okamoto
2 Kana Hanazawa
3 Yukari Tamura
4 Ai Kayano
5 Haruka Tomatsu
6 Yuuki Kaji
7 Yuka Iguchi
8 Aoi Yūki
9 Yui Horie
10 Ayana Taketatsu
11 Yui Ogura
12 Aki Toyosaki
13 Aya Endo
14 Marina Inoue
15 Rie Kugimiya
16 Kanae Itō
16 Aya Hirano
18 Rina Satou
18 Mamiko Noto
20 Houko Kuwashima
21 Yu Kobayashi
22 Suzuko Mimori
23 Rina Hidaka
24 Mariya Ise
25 Maaya Sakamoto

[Source]