| Verfahrensbeteiligte | U/E | Datum | Beschw.-Nr. | amtl. Sammlung | Fundstelle deutsch |
| O. ./. GB | U (Pl) | 08.07.1987 | 2/1986/100/148 | Ser. A no. 120 | EGMR-E 3, 614 |
| O. ./. GB | U (Pl) | 09.06.1988 | 2/1986/100/148 | Ser. A no. 136-A | EGMR-E 3, 619 |
| Obermeier ./. A | U (K) | 28.06.1990 | 6/1989/166/222 | Ser. A no. 179 | EuGRZ
1990, 209; ÖJZ 1991, 22; Kanzlei-Übersetzg. des EGMR |
| Oberschlick ./. A | U (Pl) | 23.05.1991 | 6/1990/197/257 | Ser. A no. 204 | EuGRZ
1991, 216; MR 1991, 171; NJW 1992, 613; ÖJZ 1991, 641; Kanzlei-Übersetzg. des EGMR |
| Oberschlick ./. A (no. 2) | U (K) | 01.07.1997 | 47/1996/666/852 | Reports 1997-IV | MR 1997, 196; NJW 1999, 1321; ÖJZ 1997, 956 |
| Observer und Guardian ./. GB | U (Pl) | 26.11.1991 | 51/1990/242/313 | Ser. A no. 216 | EuGRZ
1995, 16; MR 1992, 215; ÖJZ 1992, 378 |
| Obst ./. D | U (V) | 23.09.2010 | 425/03 | EuGRZ 2010, 571; NZA 2011, 277; ZevKR 56(2011), 82 | |
| Öcalan ./. TR | vM | 30.11.1999 | 46221/99 | NJW 2000, 1093 | |
| Öcalan ./. TR | U (I) | 12.03.2003 | 46221/99 | EuGRZ 2003, 472 | |
| Öcalan ./. TR |
U (GK) | 12.05.2005 | 46221/99 | ECHR 2005-IV | EuGRZ 2005, 463; NVwZ 2006, 1267 |
| Öcalan ./. TR | E (II) | 06.07.2010 | 5980/07 | NJW 2010, 3703 | |
| Odabaşı und Koçak ./.
TR |
U (IV) | 21.02.2006 | 50959/99 | NVwZ 2007, 313 |
|
| Odièvre ./. F | U (GK) | 13.02.2003 | 42326/98 | ECHR 2003-III | EuGRZ
2003, 584; FPR 2003, 368; NJW 2003, 2145; ÖJZ 2005, 34 |
| Oerlemans ./. NL | U (K) | 27.11.1991 | 42/1990/233/299 | Ser. A no. 219 | ÖJZ 1992, 386 |
| Oferta Plus S.R.L. ./. MD |
U (IV) | 19.12.2006 | 14385/04 | NJW 2007, 3409 |
|
| Oğur ./. TR | U (GK) | 20.05.1999 | 21594/93 | ECHR 1999-III | NJW 2001, 1991 |
| O'Halloran und Francis ./. GB | U (GK) | 29.06.2007 | 15809/02; 25624/02 | ECHR 2007-III | NJW 2008, 3549 |
| Okkalı ./. TR |
U (II) | 17.10.2006 | 52067/99 | ECHR 2006-XII | ÖJZ 2008, 293 |
| Okonkwo ./. A | E (III) | 22.05.2001 | 35117/97 | ÖJZ 2001, 816 | |
| Okpisz ./. D |
U (IV) | 25.10.2005 | 59140/00 |
BFH/NV Beilage 2006, 357; DStR 2006, 1404; JAmt 2007, 50; NVwZ 2006, 917 |
|
| Olbertz ./. D | E (IV) | 25.05.1999 | 37592/97 | ECHR 1999-V | NJW 2001, 1558 |
| Oliveira ./. CH | U (K) | 30.07.1998 | 84/1997/868/1080 | Reports 1998-V | JBl 1999, 102; ÖJZ 1999, 77 |
| Öllinger ./. A |
E (III) | 13.05.2004 | 74245/01 |
ÖJZ 2005, 117 | |
| Öllinger ./. A |
U (I) | 29.06.2006 | 76900/01 |
ECHR 2006-IX | ÖJZ 2007, 79 |
| Olsson ./. S (no. 1) | U (Pl) | 24.03.1988 | 2/1987/125/176 | Ser. A no. 130 | EGMR-E 4, 18 EuGRZ 1988, 591 |
| Olsson ./. S (no. 2) | U (K) | 27.11.1992 | 74/1991/326/398 | Ser. A no. 250 | ÖJZ 1993, 353 |
| Ommer ./. D (Nr. 1) | U (V) | 13.11.2008 | 10597/03 | StV 2009, 519 | |
| Ommer ./. D (Nr. 2) | U (V) | 13.11.2008 | 26073/03 | HRRS 2009 Nr.217 | |
| Omojudi ./. GB | U (IV) | 24.11.2009 | 1820/08 | InfAuslR 2010, 178 | |
| Open Door und Dublin Well Woman ./. IRL | U (Pl) | 29.10.1992 | 64/1991/316/387-388 | Ser. A no. 246-A | EuGRZ
1992, 484; NJW 1993, 773; ÖJZ 1993, 280 |
| Orlowski ./. D | E (V) | 01.04.2008 | 35000/05 | NJW 2009, 1403 | |
| Ortenberg ./. A | U (K) | 25.11.1994 | 33/1993/428/507 | Ser. A no. 295-B | JBl 1995, 443; ÖJZ 1995, 225 |
| Osinger ./. A |
U (III) | 24.03.2005 | 54645/00 |
ÖJZ 2006, 255 |
|
| Österreichischer
Rundfunk ./. A |
U (I) | 07.12.2006 | 35841/02 | ÖJZ 2007, 472 |
|
| Österreichischer
Rundfunk ./. A | E (IV) | 25.05.2004 | 57597/00 | MR 2004, 244 | |
| Otto-Preminger-Institut ./. A | U (K) | 20.09.1994 | 11/1993/406/485 | Ser. A no. 295-A | JBl 1995, 304; MR 1995, 35; ÖJZ 1995, 154 |
| Ould Barar ./. S |
E (I) | 19.01.1999 | 42367/98 | InfAuslR 1999, 269 |
|
| Oyston ./. GB | E (IV) | 22.01.2002 | 42011/98 | ÖJZ 2003, 236 | |
| Öztürk ./. D | U (K) (50) | 23.10.1984 | 9/1982/55/84 | Ser. A no. 85 | EGMR-E 2, 343 EuGRZ 1985, 144 |
| Öztürk ./. D | U (Pl) | 21.02.1984 | 9/1982/55/84 | Ser. A no. 73 | EGMR-E 2, 329 EuGRZ 1985, 62; NJW 1985, 1273; NStZ 1984, 269; Kanzlei-Übersetzg. des EGMR |