List of Oklahoma ballot measures
The following is a list of statewide initiatives and referendums modifying state law and proposing state constitutional amendments in Oklahoma, sorted by election.
2010s
2018
| Proposal | Passed | YES votes | YES % | NO votes | NO % | Description |
| State Question 793 | No | 580,341 | 49.76 | 585,928 | 50.24 | amend the Oklahoma Constitution to allow optometrists to practice within a mercantile establishment. |
| State Question 794 | Yes | 905,195 | 78.01 | 255,230 | 21.99 | amend the Oklahoma Constitution to expand the rights of victims of crime. |
| State Question 798 | No | 528,614 | 45.91 | 622,863 | 54.09 | amend the Oklahoma Constitution to provide that the governor and lieutenant governor be jointly elected. |
| State Question 800 | No | 488,612 | 42.78 | 653,630 | 57.22 | amend the Oklahoma Constitution to create a new trust fund consisting of a portion of all taxes collected against the extraction of oil and gas resources. |
| State Question 801 | No | 572,811 | 49.6 | 581,989 | 50.4 | amend the Oklahoma Constitution to allow voters within a local school district to expand the permissible use of property taxes to include school operations rather than just for school buildings. |
2020s
2020
| Proposal | Passed | YES votes | YES % | NO votes | NO % | Description |
| State Question 802 | Yes | 340,572 | 50.49% | 334,019 | 49.51% | Amends State Constitution to expand Medicaid to adults between 18 and 65 whose income is 133% of the federal poverty level or below under the Patient Protection and Affordable Care Act |
| Proposal | Passed | YES votes | YES % | NO votes | NO % | Description |
| State Question 805 | No | 588,280 | 38.92% | 923,328 | 61.08% | Prohibits former felony convictions from being considered for calculating future punishments |
| State Question 814 | No | 615,161 | 41.21% | 877,432 | 58.79% | Decreases payments to Tobacco Settlement Endowment Trust Fund from 75% to 25%, directs legislature to use money from fund to secure federal matching funds for state's Medicaid program |