| Name | Dates | City | Category | Calendar |
| Martin Luther King, Jr. Day - Offices Closed | 1/17/2011 | | OKDHS Wide | OKDHS Wide |
| Presidents' Day - Offices Closed | 2/21/2011 | | OKDHS Wide | OKDHS Wide |
| 26th Annual Black Heritage Celebration | 2/24/2011 | Oklahoma City | Event | Office for Civil Rights |
| Oklahoma and Canadian County Career Fair | 3/3/2011 | Oklahoma City | OKDHS Wide | OKDHS Wide |
| Child Care Development Fund | 5/17/2011 | Oklahoma City | Open Meeting | OKDHS Wide |
| Memorial Day - Offices Closed | 5/30/2011 | | OKDHS Wide | OKDHS Wide |
| Independence Day - Offices Closed | 7/4/2011 | | OKDHS Wide | OKDHS Wide |
| Advisory Committee on Services to Persons with Developmental Disabilities | 7/12/2011 | Oklahoma City | Open Meeting | Developmental Disabilities Services Division |
| Labor Day - Offices Closed | 9/5/2011 | | OKDHS Wide | OKDHS Wide |
| Lincoln and Pottawatomie County Career Fair | 10/10/2011 | Shawnee | OKDHS Wide | OKDHS Wide |
| Veterans Day - Offices Closed | 11/11/2011 | | OKDHS Wide | OKDHS Wide |
| Thanksgiving Holiday - Offices Closed | 11/24/2011 to 11/25/2011 | | OKDHS Wide | OKDHS Wide |
| Christmas Holiday - Offices Closed | 12/26/2011 to 12/27/2011 | | OKDHS Wide | OKDHS Wide |
| Advisory Committee on Services to Persons with Developmental Disabilities | 3/15/2012 | Oklahoma City | Open Meeting | Developmental Disabilities Services Division |
| Group Homes for Persons with Developmental or Physical Disabilities Advisory Board Meeting | 4/18/2012 | Oklahoma City | Open Meeting | Developmental Disabilities Services Division |
| Advisory Committee on Services to Persons with Developmental Disabilities | 5/10/2012 | Oklahoma City | Open Meeting | Developmental Disabilities Services Division |
| Group Homes for Persons with Developmental or Physical Disabilities Advisory Board Meeting | 7/18/2012 | Oklahoma City | Open Meeting | Developmental Disabilities Services Division |
| Advisory Committee on Services to Persons with Developmental Disabilities | 7/26/2012 | Oklahoma City | Open Meeting | Developmental Disabilities Services Division |
| Advisory Committee on Services to Persons with Developmental Disabilities | 9/15/2012 | Oklahoma City | Open Meeting | Developmental Disabilities Services Division |
| Group Homes for Persons with Developmental or Physical Disabilities Advisory Board Meeting | 10/17/2012 | Oklahoma City | Open Meeting | Developmental Disabilities Services Division |