Frederick Peter "Cy" Falkenberg (December 17, 1879 – April 15, 1961) was an American professional baseball pitcher.

He was the first of seven children born to Agnes and Frederick A. Falkenberg, who had both immigrated to the United States from Norway.

Manager Fred Clarke allowed Falkenberg to make hs first start against the Cubs in Chicago.

[9] He was briefly sent back to Worcester,[10] but was recalled at the end of July, when the Pirates released Ed Doheny.

[15][16] When Huff was hospitalized in 1905, Stahl and Falkenberg coached the Fighting Illini baseball team.

[26] In September 1907, the National Commission ruled that Falkenberg owed the Harrisburg club a refund on a $200 signing bonus ($6,749 in current dollar terms) that he received from them because he joined Washington instead.

[30] Falkenberg continued to pitch inconsistently for Washington,[31][32] and his name resurfaced in trade rumors later in the season.

[33][34] On July 23, 1908, the Cleveland Naps of the American League purchased Falkenberg and Dave Altizer from the Senators for $10,000 ($349,963 in current dollar terms).

[36] After the 1911 season, Harry Davis became Cleveland's manager, and he released Falkenberg to the Toledo Mud Hens of the American Association.

[37] With Toledo in 1912, Falkenberg played with Earle Gardner, who had learned how to throw the emery ball from Russ Ford.

[41] In 1914, using the emery ball, Falkenberg led the Federal League with 43 games started, 377+1⁄3 innings pitched, and 236 strikeouts.

[51] However, Falkenberg struggled with Philadelphia, pitching to a 2–6 win–loss record,[52] and was sold back to Indianapolis on July 5.

[58] Falkenberg married Edna Russell, a telephone operator who he met in Washington, D.C., after the 1908 season.

[62] During World War II, Falkenberg worked in the tool room for the Bethlehem Shipbuilding Corporation.