| 377 | A Guide To Reading and Writing Japanese (Florence Sakade) | 
| 485 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) | 
| 461 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) | 
| 209 | A New Dictionary of Kanji Usage | 
| 774 | Classic Nelson (Andrew Nelson) | 
| 572 | Essential Kanji (P.G. O’Neill) | 
| 381 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) | 
| 548 | Japanese Names (P.G. O’Neill) | 
| 234 | Kanji and Kana (Spahn and Hadamitzky) | 
| 234 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) | 
| 444 | Kanji in Context (Nishiguchi and Kono) | 
| 244 | Kodansha Compact Kanji Guide | 
| 103 | Kodansha Kanji Dictionary (Jack Halpern) | 
| 70 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) | 
| 74 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) | 
| 881 | Les Kanjis dans la tete (Yves Maniette) | 
| 2742 | Morohashi | 
| 93 | New Japanese English Character Dictionary (Jack Halpern) | 
| 617 | New Nelson (John Haig) | 
| 872 | Remembering The Kanji (James Heisig) | 
| 937 | Remembering The Kanji, 6th edition (James Heisig) | 
| 193 | The Kanji Way to Japanese Language Power (Dale Crowley) | 
| 501 | Tuttle Kanji Cards (Alexander Kask) | 
      co-, cooperation
    
    - On:
 - キョウ
 
      Jōyō kanji, taught in grade 4
    
    
      JLPT level N2
    
    
      121 of 2500 most used kanji in newspapers
    
Stroke order
On reading compounds
- 協議 【キョウギ】 conference, consultation, discussion, negotiation
 - 協会 【キョウカイ】 association, society, organization, organisation
 - 農協 【ノウキョウ】 agricultural cooperative
 - 経協 【ケイキョウ】 management association, management conference, management institute
 
Readings
- Korean:
 - hyeob
 
Spanish
- cooperación
 - colaboración
 
Portuguese
- co-
 - cooperação
 
French
- coopération
 - co-
 
| 1445 | 2001 Kanji | 
| 2k6.1 | The Kanji Dictionary | 
| 1-2-6 | SKIP code | 
| 4402.7 | Four corner code | 
| 1-22-08 | JIS X 0208-1997 kuten code | 
| 5354 | Unicode hex code |