I just think about that on which I am really curious. Maybe anyone of us can't write down the name of his or her own country in more than 10 different kinds of languages.

Today I saw the way of Russion saying about China is something like "kitai" thing that I don't remember clearly.

I wanna know more about this.

Let's roll in for this, OK? I've prepared the most frequently appeared countris' name below.(all rank by the first letter)

Remember, write down in your own language writing form.

Argentina
Australia
Austria
Azerbaijan
Belgium
Bolivia
Brazil
Canada
Chile
China
Colombia
Czech Republic 
Finland
France
Georgia       
Germany     
Greece       
Guatemala            
Hungary       
India       
Indonesia      
Ireland       
Israel       
Italy       
Japan       
Jordan       
Kuwait       
Latvia      
Lebanon      
Lithuania       
Malaysia       
Malta     
Mexico       
Netherlands      
Norway       
Oman       
Pakistan       
Philippines       
Poland       
Portugal       
Republic Of Korea       
Romania       
Russia
Rwanda       
Singapore       
Slovakia       
Slovenia       
Spain       
Sweden       
Switzerland      
Thailand       
Turkey       
United Arab Emirates       
United Kingdom     
United States     
Viet Nam    

Check it out how many languages will be present right here. hehe

Argentina = arjantin
Australia = avustrualya 
Austria = avusturya
Azerbaijan = azerbaycan
Belgium = belçika
Bolivia = bolivya
Brazil = brezilya
Canada = Kanada
Chile = şili
China = çin
Colombia =kolombiya
Czech Republic =çek cumhuriyeti
Finland = finlandiya
France =fransa
Georgia = gürcistan
Germany = almanya
Greece = yunanistan
Guatemala = Guatemala           
Hungary = macaristan
India = hindistan
Indonesia = endonezya
Ireland = irlanda
Israel = israil
Italy = italya
Japan = japınya
Jordan = ürdün
Kuwait = kuveyt
Latvia = letonya
Lebanon = lübnan
Lithuania  = litvanya
Malaysia = malezya
Malta = Malta   
Mexico = meksika
Netherlands = hollanda
Norway = norveç
Oman = umman
Pakistan = Pakistan     
Philippines =  filipinler
Poland = polonya
Portugal = portekiz
Republic Of Korea = kore
Romania = romanya
Russia = rusya
Rwanda = Ruanda(sure )    
Singapore = singapur
Slovakia = slovakya
Slovenia = slovenya
Spain = ispanya
Sweden = isveç
Switzerland  = isviçre
Thailand = tayland
Turkey = türkiye
United Arab Emirates = birleşik arap emirlikleri     
United Kingdom =  ingiltere

United States  = amerikabirleşik devletleri

Viet Nam =  Vietnam

Ogre wrote:

Today I saw the way of Russion saying about China is something like "kitai" thing that I don't remember clearly.

You right, Ogre, it is "Kitai".

In Russian:

Argentina=Argentina
Australia=Avstraliya
Austria=Avstriya
Azerbaijan=Azerbaidzhan
Belgium=Belgiya
Bolivia=Boliviya
Brazil=Braziliya
Canada=Kanada
Chile=Chili
China=Kitai
Colombia=Kolumbiya
Czech Republic=Chekhiya
Finland=Finlyandiya
France=Frantsiya
Georgia=Gruziya       
Germany=Germaniya     
Greece=Gretsiya       
Guatemala=Gvatemala           
Hungary=Vengriya       
India=Indiya       
Indonesia=Indoneziya     
Ireland=Irlandiya       
Israel=Izrail      
Italy=Italiya       
Japan=Yaponiya       
Jordan=Iordaniya      
Kuwait=Kuveit       
Latvia=Latviya    
Lebanon=Livan      
Lithuania=Litva       
Malaysia=Malaiziya       
Malta=Malta     
Mexico=Meksika       
Netherlands=Niderlandi      
Norway=Norvegiya      
Oman=Oman       
Pakistan=Pakistan       
Philippines=Filippini       
Poland=Polsha       
Portugal=Portugaliya       
Republic Of Korea=(Respublika) Koreya      
Romania=Ruminiya       
Russia=Rossiya
Rwanda=Ruanda       
Singapore=Singapur       
Slovakia=Slovakiya       
Slovenia=Sloveniya       
Spain=Ispaniya       
Sweden=Shvetsiya       
Switzerland=Shveitsariya    
Thailand=Tailand       
Turkey=Turtsiya
United Arab Emirates=Ob'edinennie Arabskie Emirati       
United Kingdom=Velikobritaniya (Soedinennoe korolevstvo)     
United States=Soedinennie Shtati (Ameriki)   
Viet Nam=V'etnam

In Simplified Chinese character,

Argentina=阿根廷
Australia=澳大利亚
Austria=奥地利
Azerbaijan=阿塞拜疆
Belgium=比利时
Bolivia=玻利维亚
Brazil=巴西
Canada=加拿大
Chile=智利
China=中国
Colombia =哥伦比亚
Czech Republic=捷克？ 
Finland=芬兰
France =法兰西 or 法国
Georgia=乔治亚？
Germany=德国   full name is 德意志民主共和国  
Greece=希腊       
Guatemala=瓜特马拉            
Hungary   =匈牙利
India        =印度
Indonesia       =印度尼西亚
Ireland        =爱尔兰
Israel        =以色列
Italy        =意大利

Jordan        =约旦
Kuwait        =科威特
Latvia       =拉特维亚
Lebanon       =黎巴嫩
Lithuania        =立陶宛
Malaysia        =马来西亚
Malta      =马耳他
Mexico        =墨西哥
Netherlands       =荷兰
Norway       =挪威
Oman        =阿曼
Pakistan        =巴基斯坦
Philippines        =菲律宾
Poland        =波兰
Portugal        =葡萄牙
Republic Of Korea      =朝鲜？ 
Romania        =罗马尼亚
Russia =俄罗斯
Rwanda        =卢旺达
Singapore        =新加坡
Slovakia        =斯洛伐克
Slovenia        =斯洛文尼亚
Spain        =西班牙
Sweden        =瑞典
Switzerland       =瑞士
Thailand        =泰国
Turkey        =土耳其
United Arab Emirates=阿拉伯联合酋长国       
United Kingdom    =英国  full name is 大不列颠及北爱尔兰联合王国
United States      =美国 full name is 美利坚合众国
Viet Nam =越南