Sherry Jackson, born Sherry Lynn Jackson on February 15, 1942, in Big Springs, Idaho, is a retired American actress renowned for her extensive career as a child star transitioning into adult roles across film and television.

The youngest of four children to Maurita Kathleen Gilbert and Curtis Loys Jackson Sr., she endured the early loss of her father at age six, prompting her family to relocate to Los Angeles where her mother remarried television writer Montgomery Pittman, facilitating her entry into the entertainment industry.

Discovered at four during a studio talent search, Sherry Jackson debuted uncredited in films like The Breaking Point in 1950 before securing recurring child roles in the Ma and Pa Kettle series as Susie Kettle, appearing in six entries from 1950 to 1952.​

Her breakthrough arrived with a standout performance as Jacinta Marto in the 1952 Oscar-nominated drama The Miracle of Our Lady of Fatima, portraying a visionary shepherd girl amid religious persecution, which showcased her emotive depth at just nine years old.

That same year, she portrayed Terry Williams, the precocious daughter of Danny Thomas, on the sitcom Make Room for Daddy (later The Danny Thomas Show), holding the role for six seasons from 1953 to 1960 and appearing in 193 episodes, cementing her status as a beloved television fixture.

Throughout the 1950s and early 1960s, Sherry Jackson amassed over 100 credits, guest-starring on classics like Gunsmoke, Wagon Train, Perry Mason, Maverick, The Rifleman, 77 Sunset Strip, and The Twilight Zone while featuring in films such as Trouble Along the Way and Come Next Spring.​

As a teenager and young adult, she continued thriving in Westerns and adventures, including Rawhide, Riverboat, The Many Loves of Dobie Gillis, and The Virginian, before embracing more mature parts in the mid-1960s with appearances on Batman, Lost in Space, The Wild Wild West, and her iconic Star Trek episode "What Are Little Girls Made Of?" as the alluring android Andrea in 1966.

The late 1960s and 1970s saw her in cult films like Wild on the Beach, The Mini-Skirt Mob, and Gunn, alongside prolific television work on series such as The Immortal, Love, American Style, Barnaby Jones, The Rockford Files, and Charlie's Angels, often portraying vivacious or enigmatic women.

Her final notable roles included 1970s guest spots on Fantasy Island, Starsky & Hutch, The Incredible Hulk, and Vega$, with sporadic later credits like a 1991 appearance in Daughters of the Dust, after which she retired from acting to pursue real estate.​