Haruhi Fujioka: [is being forced to kiss a girl] This is going too far.
Kyouya Ohtori: I'll cut your debt by a third.
Haruhi Fujioka: ...Oh well, it's just on the cheek.

Tamaki Suou: Hikaru! Kaoru!
[Twins salute, grab Haruhi and run away]
Tamaki Suou: Kyouya, you call the hairdresser! Mori-senpai, get us some contacts from the nurse!
[Mori sprints off]
Mitsukuni "Honey" Haninozuka: Tama-chan, what about me?
Tamaki Suou: Honey-senpai, you...
Mitsukuni "Honey" Haninozuka: Yeah? Yeah?
Tamaki Suou: ...eat the cakes please.

Kyouya:
To Kaoru and Hikaru who were about to induce amnesia on Ritsu Kasanoda who accidentally saw Haruhi in her underwear by hitting him on the head with a baseball bat:
"That's enough, you two. Leave assault and battery to the professionals."

To his sister after she told him that it's all right for him to take it easy sometimes because their father doesn't expect as much from him compared with his older brothers:
"I know. I'll never be successor to the Ootori family. I'm not like my brothers. All they had to do was follow the path that had been promised to them - the path that keeps heading upward. It's because I'm the third son that I can't relax. I'll surpass Father's expectations of me, and I will respect my brothers and never step on their toes in the process. How can I demonstrate my abilities without exceeding the limits of being the third son? I have a daunting task: I must paint the perfect picture on a canvas that has already been placed inside a magnificent frame."

Upon being woken up by Tamaki and the other Host Club boys so they could all go to a "commoner" expo:
“For your information, I was up until 5 a.m. you morons, which if you hadn't noticed makes me a little less than happy about being woken up... Okay, enough with the commoner shtick. If you formulaic halfwits feel like wasting all afternoon on worn out old clichés, go right ahead and suit yourselves.”