for the workshop CCR 2012: 7th Conference on Computability, Complexity and Randomness
| Name | Institution | visit dates | Confirmed |
| Barmpalias, G | Chinese Academy of Sciences | 1 Jul - 7 Jul | Yes |
| Bauwens, B | Universidade do Porto | 2 Jul - 6 Jul | Yes |
| Becher, V | Universidad de Buenos Aires | 2 Jul - 6 Jul | Yes |
| Beckmann, A | Swansea University | 2 Jul - 6 Jul | Yes |
| Bienvenue, L | Université Paris 7 - Denis-Diderot | 1 Jul - 7 Jul | Yes |
| Brattka, V | University of Cape Town | 2 Jul - 6 Jul | Yes |
| Calude, CS | University of Auckland | 2 Jul - 6 Jul | Yes |
| Cardelli, L | Microsoft Research | 2 Jul - 6 Jul | Yes |
| Chiodo, MC | University of Melbourne | 2 Jul - 6 Jul | Yes |
| Cholak, P | University of Notre Dame | 2 Jul - 6 Jul | Yes |
| Cooper, SB | University of Leeds | 2 Jul - 6 Jul | Yes |
| Dawar, A | University of Cambridge | 2 Jul - 6 Jul | Yes |
| Day, A | University of California, Berkeley | 1 Jul - 7 Jul | Yes |
| Downey, RG | Victoria University of Wellington | 2 Jul - 6 Jul | Yes |
| Fouche', W | University of South Africa | 1 Jul - 7 Jul | Yes |
| Fournet, C | Microsoft Research | 2 Jul - 6 Jul | Yes |
| Franklin, JNY | University of Connecticut | 1 Jul - 7 Jul | Yes |
| Gács, P | Boston University | 30 Jun - 8 Jul | Yes |
| Goncharov, S | Russian Academy of Sciences | 2 Jul - 6 Jul | Yes |
| Gordon, AD | Microsoft Research | 2 Jul - 6 Jul | Yes |
| Greenberg, N | Victoria University of Wellington | 2 Jul - 6 Jul | Yes |
| Groth, J | University College London | 2 Jul - 6 Jul | Yes |
| Heiber, PA | Universidad de Buenos Aires | 2 Jul - 7 Jul | Yes |
| Herbert, I | University of California, Berkeley | 1 Jul - 7 Jul | Yes |
| Higuchi, K | Tohoku University | 2 Jul - 6 Jul | Yes |
| Hitchcock, JM | University of Wyoming | 1 Jul - 7 Jul | Yes |
| Hogarth, M | University of Cambridge | 2 Jul - 6 Jul | Yes |
| Hölzl, RM | Université Paris 7 - Denis-Diderot | 1 Jul - 7 Jul | Yes |
| Hoyrup, M | INRIA Paris - Rocquencourt | 1 Jul - 7 Jul | Yes |
| Hyland, JME | University of Cambridge | 2 Jul - 6 Jul | Yes |
| Kabanets, V | Simon Fraser University | 2 Jul - 6 Jul | Yes |
| Kihara, T | Tohoku University | 1 Jul - 6 Jul | Yes |
| Kolokolova, A | Memorial University of Newfoundland | 2 Jul - 6 Jul | Yes |
| Koucký, M | Academy of Sciences of the Czech Republic | 1 Jul - 7 Jul | Yes |
| Kucera, A | Charles University, Prague | 1 Jul - 7 Jul | Yes |
| Lewis, AEM | University of Leeds | 2 Jul - 6 Jul | Yes |
| Lowe, B | Universiteit van Amsterdam | 2 Jul - 6 Jul | Yes |
| Lutz, JH | Iowa State University | 2 Jul - 6 Jul | Yes |
| Mayordomo, E | Universidad de Zaragoza | 2 Jul - 6 Jul | Yes |
| Merkle, W | Universität Heidelberg | 2 Jul - 6 Jul | Yes |
| Miyabe, K | Kyoto University | 1 Jul - 7 Jul | Yes |
| Monin, B | LIAFA | 1 Jul - 7 Jul | Yes |
| Moody, JKM | University of Cambridge | 2 Jul - 6 Jul | Yes |
| Nguyen, D | University at Buffalo | 1 Jul - 7 Jul | Yes |
| Nies, A | University of Auckland | 2 Jul - 6 Jul | Yes |
| Passmore, GO | University of Cambridge | 2 Jul - 6 Jul | Yes |
| Pauly, AM | University of Cambridge | 2 Jul - 6 Jul | Yes |
| Petrovic, T | University of Zagreb | 1 Jul - 7 Jul | Yes |
| Porter, C | University of Notre Dame | 1 Jul - 7 Jul | Yes |
| Reznikova, Z | Russian Academy of Sciences | 1 Jul - 7 Jul | Yes |
| Roy, DM | University of Cambridge | 2 Jul - 6 Jul | Yes |
| Rute, J | Carnegie Mellon University | 2 Jul - 6 Jul | Yes |
| Ryabko, B | Siberian State University of Telecommunications and Information Sciences | 1 Jul - 7 Jul | Yes |
| Ryabko, D | INRIA Lille - Nord Europe Research Centre | 1 Jul - 7 Jul | Yes |
| Sanders, S | Universiteit Gent | 1 Jul - 7 Jul | Yes |
| Selman, AL | University at Buffalo | 1 Jul - 6 Jul | Yes |
| Senno, GI | Universidad de Buenos Aires | 1 Jul - 7 Jul | Yes |
| Shen, A | Université de Montpellier 2 | 1 Jul - 7 Jul | Yes |
| Simpson, SG | Pennsylvania State University | 1 Jul - 7 Jul | Yes |
| Soare, RI | University of Chicago | 2 Jul - 6 Jul | Yes |
| Stannett, MP | University of Sheffield | 2 Jul - 6 Jul | Yes |
| Tadaki, K | Chuo University | 1 Jul - 7 Jul | Yes |
| Takahashi, H | University of Electro-Communications | 1 Jul - 7 Jul | Yes |
| Taveneaux, A | Université Paris 7 - Denis-Diderot | 1 Jul - 7 Jul | Yes |
| Teutsch, JR | Pennsylvania State University | 1 Jul - 8 Jul | Yes |
| Thapen, N | Academy of Sciences of the Czech Republic | 2 Jul - 6 Jul | Yes |
| Turetsky, D | Victoria University of Wellington | 1 Jul - 7 Jul | Yes |
| Vereshagin, N | Moscow State University | 1 Jul - 6 Jul | Yes |
| Vermeeren, S | University of Leeds | 2 Jul - 6 Jul | Yes |
| Vitanyi, PMB | Universiteit van Amsterdam | 1 Jul - 7 Jul | No |
| Welch, PD | University of Bristol | 2 Jul - 6 Jul | Yes |
| Winskel, G | University of Cambridge | 2 Jul - 6 Jul | Yes |
| Wood, A | Air Force Institute of Technology | 2 Jul - 6 Jul | Yes |
| Zimand, M | Towson University | 1 Jul - 7 Jul | Yes |