Henry Jacob Winser (23 November 1833 – 1896) was an American journalist and diplomat.

At the opening of the Civil War he accompanied Colonel Ellsworth as military secretary, and afterward was war-correspondent of the Times.

After the war he served for a period as city and night editor of the Times, and then as day-manager of the editorial department.

In 1867 he attended the French exposition at Paris as regular correspondent for the Times, and made the trip to Cherbourg in the iron-clad Dunderberg.

In 1882, he was made chief of the bureau of information of the Northern Pacific railway company, but on the retirement of Henry Villard he returned to journalism, first as assistant editor of the New York Commercial Advertiser and afterward as managing editor of the Newark Advertiser.