| Other organizations in Maryland |
| Id | Name | Address | State | Established | Total Income |
| 1 | Ordered By The Lord Ministries & Outreach Center International | 5305 Wyndholme Circle Unit 104, Baltimore, MD 21229 | MD | 2012-08 | $0 |
| 2 | Org For Advancement Of & Servc For Individuals With Special Needs Inc | 11412 Swanins Creek Ct, Potomac, MD 20854 | MD | 2010-12 | $0 |
| 3 | Oromo Relief Association-Usa Inc | 12921 Big Horn Drive, Silver Spring, MD 20904 | MD | 1996-08 | $0 |
| 4 | Our Seed Of Hope Inc | 9525 Georgia Ave Ste 1, Silver Spring, MD 20910-1439 | MD | 2012-06 | $0 |
| 5 | Our Voices Of Hope Inc | 13900 Farnsworth Ln Apt 4302, Uppr Marlboro, MD 20772-6998 | MD | 2011-10 | $0 |
| 6 | Ourearth Org Inc | 4000 N Charles St Unit 804, Baltimore, MD 21218 | MD | 2006-12 | $0 |
| 7 | Outlaw Kitties Trap Neuter Return & Rescue Corporation | 7719 Emerson Rd, Hyattsville, MD 20784 | MD | 2012-11 | $0 |
| 8 | Oxford Library Incorporated | P O Box 584, Oxford, MD 21654 | MD | 1976-06 | $1,030 |
| 9 | Oxon Hills High School Instrumental Music Department Boosters Assoc | 6701 Leyte Drive, Oxon Hill, MD 20745 | MD | 2012-09 | $40,530 |
| 10 | Painted Screen Society Of Baltimore Inc | Po Box 12122, Baltimore, MD 21281 | MD | 2012-04 | $0 |
| 11 | Panhellenic Club Of Annapolis Inc | Po Box 1136, Severna Park, MD 21146-8136 | MD | 1990-08 | $0 |
| 12 | Panlar Charitable Trust | 9650 Rockville Pike, Bethesda, MD 20814 | MD | 1980-07 | $0 |
| 13 | Paper And Pencils Incorporated | 3411 Oak Hill Drive, Trappe, MD 21673 | MD | 2005-03 | $0 |
| 14 | Parans Vitam | 4935 Nicholson Ct, Kensington, MD 20895 | MD | 2012-02 | $0 |
| 15 | Parents Council Of Washington | 7303 River Road, Bethesda, MD 20817 | MD | 1973-12 | $0 |
| 16 | Park Head Cemetery Improvement Association Inc | 12653 Parkhead Rd, Big Pool, MD 21711 | MD | 1963-07 | $0 |
| 17 | Park Heights Cemetery Inc | 13 West Potomac Street, Brunswick, MD 21716 | MD | 2011-03 | $0 |
| 18 | Park Police Volunteer Association | 6700 Riverdale Road, Riverdale, MD 20737 | MD | 2000-01 | $0 |
| 19 | Park West Medical Center Auxillary Inc | Co Karen Williams, Baltimore, MD 21215 | MD | 1995-04 | $0 |
| 20 | Parkinsonian Society Of Greater Washington | 13228 Glenhill Road, Silver Spring, MD 20904 | MD | 2012-10 | $0 |
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