Daniel O'Connor (31 January 1864 – 30 March 1933) was a Canadian politician, entrepreneur and prospector from Pembroke, Canada West.

In the late 1880s, O'Connor moved to Sudbury, where he became a sawmill operator and was elected the town's second mayor in 1894.

[1] When O'Connor moved to Temagami, he was hoping to find some mineral prospects.

[1] In 1899, O'Connor created test pits in east-central Strathy Township that later became Big Dan Mine, which is named after him.

[3] O'Connor continued to move northwards where he discovered deposits of gold.