"Little" Annie Reilly (c. 1844–unknown), also known under the aliases Kate Cooley, Connelly and Manning, was a 19th-century American thief and con artist widely regarded as "the cleverest woman in her line in America".

A well-known member of New York's underworld, she was part of an elite "inner circle" of female career criminals under Marm Mandelbaum during the 1860s and 1870s.

These included some of the most notorious thieves, blackmailers and confidence women in the country such as Lena Kleinschmidt, Sophie Lyons, Kid Glove Rosey, Queen Liz, Big Mary and Old Mother Hubbard Annie Reilly was born in Ireland in about 1844.

She later emigrated to the United States and settled down in New York City where Reilly found employment as a servant and child's nurse.

Held in custody in default of $6,500 bail, she was tried in the Court of General Sessions by Judge Sutherland, convicted of grand larceny and sentenced to 41⁄2 years in New York State Prison on April 23, 1873.