Even though Hyoyeon always says that she has no friends outside of SNSD / the wind is her best friend etc., she seems to have a rather active social life! Since she doesn't have much individual activities but seems to have the biggest eyebags, she must be doing something with her time :P. And with the recent debut of another one of her best friends, I felt like making a post about all known 'Friends of Hyoyeon'.
This year alone, 5 of them have debuted :D Too bad Hyo is usually in her own zone, we don't get a lot of moments - like Inkigayo encore!! WTH Hyo, you dance to Hoot a million times, give your Colie a hug.. =P
Anyway, so here are the ones that I know of:
The girls:
Min from Miss A


- Was part of a dance duo with Hyoyeon for Little Winners
- They've been good friends for more than ten years <3
- Even while Min was in the States, they've said they kept in touch through texts and International phone calls.
- On Sukira, Min confirmed again that they are best friends.
- Hyoyeon's ring tone was Miss A's Bad Girl Good Girl when she was in L.A
- Hyoyeon's Thanks to:
1st album - said something like "Min Youngie! It won't be long before we can both perform on the same stage like we did in Little Winners~!
Oh!: "Who I miss very much~!! My Min Youngss~! (call me!)"
[Anyone have Miss A's CD? I want to read Min's Thanks to :( ]
Nicole from Kara


- Hyo calls her 'Colie'
- Apparently Hyo was the one who introduced Min and Nicole to each other (same age) and also Seohyun and Nicole :D
- Hyo is known for treating her dongsaengs to meals and stuff so this is probably why Nicole's shoutouts to Hyo are always "FOOD" :D
- Nicole always mentions Hyoyeon when she talks about who she's close to in SNSD
- She has thanked Hyo in three albums (I don't know about the latest - I don't really follow Kara)
In the first, it was just Hyo
Next- Hyo, Fany
Last one- Hyo, Sunny and Seohyun
Hyoyeon's Thanks To in Oh!:
"My angel Colie~!! For unnie whenever I meet you, talk with you and play around ~ they are the most comfortable and fun times, you know right~!? Let's meet often~!"
Soyeon from T-ara:

- Was an ex SM Trainee and supposed to be SNSD's leader before she left SM
- Quite a number of interactions when they're on the same shows. (too lazy to look for caps right now, will update later)
- Hyoyeon's Thanks To in Oh!:
"Even though she herself was busy too, for calling me first~ for monitoring me also~! Very thankful my So Yeon unniya~!! ♥(Congrats on getting first place~!>.<)"
G.na, Cube Ent. Solo Artist

- Friendship is apparent through all the messages Gina has left on Hyoyeon's cyworld.
(will compile them in a separate post later if I have time)
- She often calls Hyo "Baby" haha
- It seems like they meet/ talk often (Gina is one of Min's good friends/ex roommate)
Sunghee, ex-member of Kara

- She was known to be very close to Nicole so that's how they are all friends, maybe?
- She has left messages for Hyo on her cyworld
- Hyoyeon's Oh! Thanks to : "Sung Hee sshi iing~ (You're doing well right~!?)"
Gyuri from Kara

- In the past both Hyo and Gyuri have mentioned that they are close although I've rarely seen them interact.
- Gyuri thanked Hyo in two of their mini albums
In the first one Gyuri mentioned Hyo and Min
In the one after, she mentioned Hyo and Tae.
Honorable mention - Minzy from 2ne1(She thanked Hyo in their latest album along with the other Bible group members - Fany,Sooyoung and Yoona)

The boys:
Park Ki Jun

- Even though he isn't a celebrity, he just has to be first :D
- Not sure what he does, but he has a lot of celebrity connections
- Had a lot of pre-debut Hyoyeon pictures on his cyworld and also wrote a bunch of posts about her but they've either been privated or deleted now T.T
- Good friends with Min, Nicole and Gina
- Hyoyeon's Thanks To:
"About 8year old friend~! My monitoring agent! Ki Jun sshi~!! ye~!! [...] but .. you know I'm very thankful right~~? >.< haha thankyou~"
Lee Jeong Seok
- Is starting to become popular as an actor on Secret Garden (with Hyun Bin and Ha Ji Won) for beating out many idols for the role.
- Has known Hyo since before she debuted in SNSD
- In an interview he said that they are still close and meet up at cafes or go to board game rooms often. They also go for walks since Hyo likes to walk :)
- Hyoyeon's Thanks to:
"My A blood type~~ Really AAAAAAAAAA X10000 .... but still....! I !! Jong Seok-ee! I like him very much~!!^^ Why~! Because whenever I am having a hard time, you are a friend who is beside me giving me strength~!!^.^* ye~! thankyou~!"
Kwang hee from ZE:A

- He's also very close to Park Ki Jun (see pic above)
- He has mentioned Hyo in some interviews saying she was happy that he was debuting in the male equivalent of SNSD (9 members)
- Has also imitated the way she talks when she calls him on Shim Shim Tapa.
Kang Jun Young, SM trainee(ex?) ex- Super Junior05 member

- He seems really close to Hyo from all the messages he leaves on Hyo's cyworld as "A really good oppa"
- The most recent one was "Happy birthday to you sister<3"
- They seem to meet up for coffee, go for bike rides to the Han River etc.
- More pictures info in the first post (will update again later)
Han Kyu Wan, SM trainee (rumored to be in SM's next boyband)

- Hyo thanked him in the first album calling him her "Best Friend" (in english) Kyu Wan oppa
- JunYoung's also close to him and has mentioned Kyu Wan in his messages to Hyo.
Lee Min, ex JYP Trainee (current member of Young Gun)

- Good friends with Min, Nicole and Gina also
- Hyo mentioned him in the first album
Kim Dong Jin, model; appeared on the show SEVEN MODELS

- Left a message on Hyo's cyworld before he left for the army.
- Hyo mentioned him in the Oh! Thanks to :
"Dong Jin ie, Yeong ju (Call me sometime>.< !)"
Junsu from 2PM

- He thanked Hyo in the first two albums but seems to have given up now :D
- But they seem close from Idol Army and some music shows- have known each other since before debut.
- He's also close to Min and Nicole.
Honourable mentions:
Onew from Shinee (Used to take the subway home together during trainee days and eat ddeokbokki <3)
Key from Shinee (Hyo texted him on Youngstreet when they were supposed to text someone they're close to. Fans have also said they've seen them hanging out together in Apgujeong)
A couple more pictures:



There might be more people that I've forgotten ... but this much for today.
Gah! I feel like a stalker hahahaha but it's mostly second hand stalking so it's okay ^^