Percy Wenrich (January 23, 1887 – March 17, 1952) was a United States composer of ragtime and popular music.

Born in Joplin, Missouri to Daniel Wenrich and Mary Ray, he left for Chicago in 1901 where he attended classes at the Chicago Musical College. Wenrich moved on to New York City around 1907 to work as a Tin Pan Alley composer, but his music retains a Missouri folk flavor. He composed at least eighteen rags, including "Ashy Africa," "Noodles," "Peaches and Cream" (1905), "Crab Apples," and "The Smiler" (1907). His songs include "Wabash Avenue After Dark" and the hits "Put on Your Old Grey Bonnet" (1909, lyrics by Stanley Murphy), "When You Wore a Tulip and I Wore a Big Red Rose" (1914, lyrics by Jack Mahoney) and "Minnetonka" (1921, lyrics by Gus Kahn).

"If It's Good Enough for Washington It's Good Enough for Me" (1908, lyrics by Ren Shields) was a song about a homeless man sleeping on a bench in a public square with statues of Washington, Jefferson, McKinley, Grant and Lee.

If it's good enough for Washington, It's good enough for me,

I'm proud that I am here tonight to keep him company,

I'm proud to sleep out with the man that set our country free,

If it's good enough for Washington, it's good enough for me.

Wenrich married vaudeville performer Dolly Connolly and in 1911 wrote the hit "Red Rose Rag" for her with lyrics by Edward Madden. In 1912, Wenrich and Madden had another hit with "Moonlight Bay." Wenrich and Connolly toured together for many years.

In the late 1930s, Wenrich and several of his fellow hitmakers formed a sensational review called "Songwriters on Parade", performing all across the Eastern seaboard on the Loew's and Keith circuits.

Wenrich's last memorable song "Sail Along, Silv'ry Moon" was published in 1937. He died in New York City in 1952 at the age of 65.