Gene Wilder, the frizzy-haired actor who brought his deft comedic touch to such unforgettable roles as the neurotic accountant in “The Producers” and the mad scientist of “Young Frankenstein,” has died. He was 83.

Wilder’s nephew said Monday that the actor and writer died late Sunday at his home in Stamford, Connecticut, of complications from Alzheimer’s disease. No funeral arrangements have been announced.

Jordan Walker-Pearlman said in a statement that Wilder was diagnosed with the disease three years ago, but kept the condition private so as not to disappoint fans.

Wilder started his acting career on the stage, but millions knew him from his work in the movies, especially his collaborations with Mel Brooks on “The Producers,” ”Blazing Saddles” and “Young Frankenstein.” The last film — with Wilder playing a California-born descendant of the mad scientist, insisting that his name is pronounced “Frahn-ken-SHTEEN” — was co-written by Brooks and Wilder and earned the pair an Oscar nomination for adapted screenplay.

“Gene Wilder, one of the truly great talents of our time, is gone,” Brooks wrote in a statement Monday. “He blessed every film we did together with his special magic and he blessed my life with his friendship. He will be so missed.”

With his unkempt hair and big, buggy eyes, Wilder was a master at playing panicked characters caught up in schemes that only a madman such as Brooks could devise, whether reviving a monster in “Young Frankenstein” or bilking Broadway in “The Producers.” Brooks would call him “God’s perfect prey, the victim in all of us.”

But he also knew how to keep it cool as the boozing gunslinger in “Blazing Saddles” or the charming candy man in the children’s favorite “Willy Wonka and the Chocolate Factory.” His craziest role: the therapist having an affair with a sheep in Woody Allen’s “Everything You Wanted to Know About Sex.”

Tweeted Jim Carrey: “Gene Wilder was one of the funniest and sweetest energies ever to take a human form. If there’s a heaven he has a Golden Ticket.”

Cloris Leachman, Wilder’s “Young Frankenstein” co-star, tweeted, “Oh, Gene, it’s too soon!”

Wilder was close friends with Richard Pryor and their contrasting personas — Wilder uptight, Pryor loose — were ideal for comedy. They co-starred in four films: “Silver Streak,” ”Stir Crazy,” ”See No Evil, Hear No Evil” and “Another You.” And they created several memorable scenes, particularly when Pryor provided Wilder with directions on how to “act black” as they tried to avoid police in “Silver Streak.”

But Wilder would insist he was no comedian. He told Robert Osborne in a 2013 interview that it was the biggest misconception about him.

“What a comic, what a funny guy, all that stuff! And I’m not. I’m really not. Except in a comedy in films,” Wilder said. “But I make my wife laugh once or twice in the house, but nothing special. But when people see me in a movie and it’s funny then they stop and say things to me about ‘how funny you were.’ But I don’t think I’m that funny. I think I can be in the movies.”

A Milwaukee native, Wilder was born Jerome Silberman on June 11, 1933. When he was 6, his mother suffered a heart attack that left her a semi-invalid. He soon began improvising comedy skits to entertain her, the first indication of his future career.

He started taking acting classes at age 12. In 1961, he became a member of Lee Strasberg’s prestigious Actor’s Studio in Manhattan.

That same year, he made both his off-Broadway and Broadway debuts using the stage name Gene Wilder. He won the Clarence Derwent Award, given to promising newcomers, for the Broadway work in Graham Greene’s comedy “The Complaisant Lover.”

A key break came in 1963 when he co-starred with Anne Bancroft in Bertolt Brecht’s “Mother Courage,” and met Brooks, her future husband.

Brooks cast Wilder in “The Producers” as Leo Bloom, an accountant who discovers the liberating joys of greed and corruption as he and Max Bialystock (Zero Mostel) conceive a Broadway flop titled “Springtime For Hitler” and plan to flee with the money raised for the show’s production. Wilder’s performance received a supporting actor Oscar nod.

Before starring in “The Producers,” he had a small role as the hostage of gangsters in the 1967 classic “Bonnie and Clyde.” He peaked in the mid-1970s with the twin Brooks hits “Blazing Saddles” and “Young Frankenstein.”

Wilder went on to write several screenplays and direct five features, including “The Woman in Red” and “Haunted Honeymoon,” in which he co-starred with his third wife, Gilda Radner. The two met while making the 1982 film “Hanky-Panky” and married in 1984.

After Radner died of ovarian cancer in 1989, Wilder spent much of his time after promoting cancer research and opened a support facility for cancer patients. In 1991, he testified before Congress about the need for increased testing for cancer.

That same year, he appeared in his final film role: “Another You” with Pryor.

Wilder worked mostly in television in recent years, including appearances on “Will & Grace” — one of which earned him an Emmy Award for outstanding guest actor — and a starring role in the short-lived sitcom “Something Wilder.” In 2015, he was among the voices in the animated “The Yo Gabba Gabba! Movie 2.”

As for why he stopped appearing on the big screen, Wilder said in 2013 he was turned off by the noise and foul language in modern movies.

“I didn’t want to do the kind of junk I was seeing,” he said in an interview. “I didn’t want to do 3D for instance. I didn’t want to do ones where there’s just bombing and loud and swearing, so much swearing… can’t they just stop and talk instead of swearing?”

Wilder is survived by his wife, Karen, whom he married in 1991, and his daughter from a previous marriage, Katherine, from whom he was estranged.