1859 Ohio gubernatorial election

{{short description|none}}

{{Use American English|date=January 2025}}

{{Use mdy dates|date=January 2025}}

{{Infobox election

| election_name = 1859 Ohio gubernatorial election

| country = Ohio

| type = Presidential

| ongoing = no

| previous_election = 1857 Ohio gubernatorial election

| previous_year = 1857

| next_election = 1861 Ohio gubernatorial election

| next_year = 1861

| election_date = October 11, 1859

| image1 = x150px

| nominee1 = William Dennison Jr.

| party1 = Republican Party (United States)

| popular_vote1 = 184,557

| percentage1 = 51.87%

| image2 = x150px

| nominee2 = Rufus P. Ranney

| party2 = Democratic Party (United States)

| popular_vote2 = 171,226

| percentage2 = 48.13%

| map_image = 1859 Ohio gubernatorial election results map by county.svg

| map_size = 210px

| map_caption = County results
Dennison: {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#D72F30|70–80%}}
Ranney: {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}}

| title = Governor

| before_election = Salmon P. Chase

| before_party = Republican Party (United States)

| after_election = William Dennison Jr.

| after_party = Republican Party (United States)

}}

{{ElectionsOH}}

The 1859 Ohio gubernatorial election was held on October 11, 1859. Republican nominee William Dennison Jr. defeated Democratic nominee Rufus P. Ranney with 51.87% of the vote.