| Honorific Prefix: | General |
| Grandison D. Royston | |
| Office1: | Delegate to 1874 Arkansas Constitutional Convention |
| Term Start1: | July 14, 1874 |
| Term End1: | September 7, 1874 |
| Constituency1: | Hempstead County |
| Alongside1: | John R. Eakin |
| Office2: | Member of the Confederate House of Representatives from Arkansas's 2nd district |
| Term Start2: | February 18, 1862 |
| Term End2: | November 8, 1864 |
| Predecessor2: | Constituency established |
| Successor2: | Rufus K. Garland |
| State Senate3: | Arkansas |
| District3: | Hempstead County and Pike County |
| Term Start3: | November 3, 1856 |
| Term End3: | November 1, 1858 |
| Predecessor3: | P. R. Booker |
| Successor3: | A. H. Carrigan |
| Office4: | Speaker of the Arkansas House of Representatives |
| Term Start4: | December 4, 1837 |
| Term End4: | November 5, 1838 |
| Predecessor4: | John Wilson |
| Successor4: | Gilbert Marshall |
| State House5: | Arkansas |
| District5: | Hempstead County |
| Term Start5: | September 12, 1836 |
| Term End5: | November 5, 1838 |
| Alongside5: | James W. Judkins |
| Predecessor5: | constituency established |
| Office6: | United States Attorney for the District of Arkansas |
| Nominator6: | John Tyler |
| Term Start6: | 1836 |
| Term End6: | 1836 |
| Predecessor6: | Thomas J. Lacey |
| Successor6: | Samuel S. Hall |
| Office7: | Delegate to 1836 Arkansas Constitutional Convention |
| Term Start7: | January 4, 1836 |
| Term End7: | January 30, 1836 |
| Alongside7: | James H. Walker |
| Constituency7: | Hempstead County[1] |
| Birth Date: | 9 December 1809 |
| Birth Place: | Carter County, Tennessee |
| Education: | Presbyterian Academy |
| Profession: | Lawyer, politician |
| Residence: | Grandison D. Royston House |
| Party: | Democratic |
| Death Place: | Washington, Arkansas |
| Serviceyears: | 1844-1849 |
| Rank: | Brigadier general |
| Footnotes: | [2] |
Grandison Delaney Royston (December 9, 1809 – August 14, 1889) was an Arkansas politician. He was born in Carter County, Tennessee and later moved to Arkansas. He served in the Arkansas House of Representatives in 1837 and the Arkansas State Senate in 1858. He represented the state in the First Confederate Congress from 1862 to 1864.[3]
In 1853 he was elected a prosecuting attorney.[4]