| Honorific-Prefix: | The Honourable |
| Juan Gaerlan | |
| Office: | Senator of the Philippines from the 12th District |
| Term Start: | June 5, 1934 |
| Term End: | September 16, 1935 |
| Alongside: | Datu Sinsuat Balabaran |
| Appointer: | Frank Murphy |
| Predecessor: | Ludovico Hidrosollo |
| Successor: | district abolished |
| Office2: | Member of the House of Representatives from Mountain Province's Lone District |
| Term Start2: | June 5, 1931 |
| Term End2: | June 5, 1934 |
| Alongside2: | Hilary Clapp and Henry Kamora |
| Predecessor2: | Juan Cailles |
| Successor2: | Felix Diaz |
| Office3: | Deputy Governor of Benguet |
| Term Start3: | 1918 |
| Term End3: | 1922 |
| Predecessor3: | Juan Cariño Oraá |
| Successor3: | Tomas Blanco |
| Office4: | Deputy Governor of Apayao and Benguet |
| Status4: | Acting |
| Term Start4: | 1921 |
| Term End4: | 1922 |
| Office5: | Deputy Governor of Mountain Province |
| Term Start5: | 1920 |
| Term End5: | 1921 |
| Party: | Nacionalista |
| Birth Date: | 7 July 1884 |
| Birth Place: | Tagudin, Ilocos Sur, Captaincy General of the Philippines |
| Death Place: | City of Greater Manila, Philippine Commonwealth |
Juan Gualberto Gaerlan y Lorenzana (July 7, 1884 – July 9, 1944) was a Filipino politician who became Senator of the Philippines during the American occupation.[1]
Gaerlan was born in Tagudin, Ilocos Sur on July 7, 1884, to Sabas Gaerlan and Rosalina Lorenza.[2]
Gaerlan held several administrative positions in Bontoc before becoming deputy governor of Benguet, then a subprovince of Mountain Province, from 1918 to 1922. He was the second Filipino to hold such position.[3] He subsequently became the deputy governor of Mountain Province from 1920 to 1921 and the acting deputy governor of Apayao and Benguet subprovinces from 1921 to 1922.
He was appointed to the House of Representatives as a delegate for the Mountain Province from 1931 to 1934, after which he was appointed by Governor-General Frank Murphy to become a Senator from the 12th Senatorial District representing the non-Christian majority provinces of the Cordilleras, Nueva Vizcaya and Mindanao from 1934 to 1935.[2]