| South Dakota High School Activities Association | |
| Map: | Map of USA highlighting South Dakota.png |
| Msize: | 250px |
| Abbreviation: | SDHSAA |
| Formation: | 1905 |
| Type: | Volunteer; Non-profit organization |
| Status: | Association |
| Purpose: | Athletic/Educational |
| Headquarters: | 804 N. Euclid Pierre, South Dakota 57501 |
| Region Served: | South Dakota |
| Membership: | 181 member high schools |
| Language: | English |
| Leader Title: | Executive Director |
| Leader Name: | Dr. Dan Swartos |
| Affiliations: | National Federation of State High School Associations |
| Num Staff: | 9 |
| Website: | sdhsaa.com |
| Remarks: | (605) 224-9261 |
South Dakota High School Activities Association governs high school sports and other activities in the state of South Dakota. The SDHSAA was founded in 1905 and has been a member of the National Federation of State High School Associations since 1923.