Lewis Ross (1825 – September 20, 1882) was a Canadian merchant and political figure.

He represented Durham East in the House of Commons of Canada from 1872 to 1878 as a Liberal Reformer member.

He was also chairman of the local public school board and president of the Port Hope Agricultural Society.

[3] Ross ran unsuccessfully for reelection in 1878 and 1882, losing to Arthur Trefusis Heneage Williams each time.

[2] He was the brother of Walter Ross who served in the House of Commons around the same time.