| Honorific-Prefix: | The Honorable |
| Nelson Dayanghirang | |
| Office1: | Member of the Philippine House of Representatives from Davao Oriental's 1st district |
| Term Start1: | June 30, 2022 |
| Predecessor1: | Corazon Nuñez Malanyaon |
| Term Start2: | June 30, 2007 |
| Term End2: | June 30, 2016 |
| Predecessor2: | Corazon Nuñez Malanyaon |
| Successor2: | Corazon Nuñez Malanyaon |
| Order3: | 10th |
| Office3: | Governor of Davao Oriental |
| Vicegovernor3: | Niño Sotero L. Uy Jr. |
| Term Start3: | June 30, 2016 |
| Term End3: | June 30, 2022 |
| Predecessor3: | Corazon Nuñez Malanyaon |
| Successor3: | Corazon Nuñez Malanyaon |
| Birth Place: | Barangay Zaragosa, Manay, Davao Oriental, Philippines |
| Nationality: | Filipino |
| Party: | Nacionalista (2007–2015; 2018–present) |
| Children: | Nelson Dayanghirang Jr. Jossone Michael Dayanghirang Therese Nicole Dayanghirang Camile Dayanghirang Chiu |
| Spouse: | Nanette Dayanghirang |
| Otherparty: | Hugpong ng Pagbabago (2018-2022) |
Nelson "Boy" Lechoncito Dayanghirang is a Filipino politician serving as the representative of Davao Oriental's 1st district since June 30, 2022 and previously from 2007 to 2016.[1] [2] [3] He was the governor of Davao Oriental from 2016 to 2022.[4]