# Greg Antonacci
**Greg Antonacci** (February 2, 1947 – September 20, 2017), full name Gregory Gerald Antonacci, was an American television actor, director, producer, and writer best known for playing the mobster [Johnny Torrio](https://www.edgepedia.org/johnny-torrio) in every season of *Boardwalk Empire* (2010–2014) and Butch DeConcini, Phil Leotardo's right-hand man, in *The Sopranos* (2006–2007).[1](https://www.imdb.com/name/nm0031246/)
| Key fact | Detail |
|---|---|
| Born / died | 1947, New York City; September 20, 2017, Massapequa, New York, aged 70[1](https://www.imdb.com/name/nm0031246/) |
| Signature acting roles | Johnny Torrio in *Boardwalk Empire*, 19 episodes across 2010–2014; Butch DeConcini in *The Sopranos*, 9 episodes across 2006–2007[1](https://www.imdb.com/name/nm0031246/) |
| Early lead roles | Vinnie Mordabito in *Busting Loose* (1977); Tony Manucci in *Makin' It* (1979)[2](https://www.a-suivre.org/annuseries/encyclopedie/personnalite.php?perso=60617) |
| Behind the camera | Supervising producer, director, and writer of the series *Brothers* (1984); director of the movie *Splash, Too* (1988) and episodes of *Mr. President* (1987)[3](https://www.tvinsider.com/people/greg-antonacci/) • [7](https://www.paleycenter.org/collection/item?item=B:13947&p=353&q=what) |
| Career breadth | IMDb credits him with about 20 directing, 17 writing, 11 producing, and 13 acting credits[1](https://www.imdb.com/name/nm0031246/) |
| Spouse | Lynda Costanzo, married January 31, 1981 until his death, with one child[1](https://www.imdb.com/name/nm0031246/) |
## Acting career
Antonacci's screen work began in the early 1970s. He played Miguel in the film *Summer Soldiers* (1972)[4](https://thetvdb.com/people/309791-greg-antonacci) and appeared as an additional Muppet performer, in voice, in *The Great Santa Claus Switch* (1970).[5](https://fmdb.mov/en/people/1212814-greg-antonacci) In 1974 he guest-starred on *The Rockford Files* as Eugene Conigliaro, an aspiring wise guy from New Jersey.[3](https://www.tvinsider.com/people/greg-antonacci/)
**Sitcom-era leads.** In the late 1970s he held two principal roles: Vinnie Mordabito in *Busting Loose* (1977) and Tony Manucci in *Makin' It* (1979).[2](https://www.a-suivre.org/annuseries/encyclopedie/personnalite.php?perso=60617) Guest appearances in this period included *Soap* (1977) and *Laverne & Shirley* (1976).[3](https://www.tvinsider.com/people/greg-antonacci/)
**The mob roles.** From 2006 to the season finale in 2007 he played Butch DeConcini, a member of the New York crew led by Phil Leotardo, in *The Sopranos*, appearing in nine episodes.[1](https://www.imdb.com/name/nm0031246/) He then portrayed the Chicago boss Johnny Torrio in *Boardwalk Empire* in every season of its run, from 2010 to 2014, for a total of 19 episodes.[1](https://www.imdb.com/name/nm0031246/) He also appeared as an uncredited New York mobster in the film *The Family* (2013) and appeared as himself in the farewell special *The Final Shot: A Farewell to Boardwalk Empire* (2014).[5](https://fmdb.mov/en/people/1212814-greg-antonacci)
## Writing, directing, and producing
Antonacci created the sitcom *Brothers* in 1984 and served as its producer for 63 episodes from 1984 to 1987, also directing 19 episodes of the series.[1](https://www.imdb.com/name/nm0031246/) • [3](https://www.tvinsider.com/people/greg-antonacci/) His directing credits include the television movie *Splash, Too* (1988), episodes of *Mr. President* (1987), *[The Tortellis](https://www.edgepedia.org/the-tortellis)* (1987), *CBS Summer Playhouse* (1987), *Perfect Strangers* (1990), *The John Larroquette Show* (1994), *In the House* (1995), and *Daddy's Girls* (1994).[3](https://www.tvinsider.com/people/greg-antonacci/) • [4](https://thetvdb.com/people/309791-greg-antonacci) As a writer he worked on *It's a Living* (1980), *It Takes Two*, *Webster*, *Brothers*, *Normal Life*, and *The Lionhearts*, and is credited as a writer on the film *Adventures in Babysitting* (1989).[6](https://www.tvguide.com/celebrities/greg-antonacci/credits/3000254958/) • [5](https://fmdb.mov/en/people/1212814-greg-antonacci) He was also a producer on the film *The Fighter* (2009).[5](https://fmdb.mov/en/people/1212814-greg-antonacci)
## Personal life
Antonacci grew up in the Hell's Kitchen section of New York.[1](https://www.imdb.com/name/nm0031246/) In 1973 he acted in the New York Shakespeare Festival production of *Two Gentlemen of Verona* at the Hanna Theatre in Cleveland, Ohio.[1](https://www.imdb.com/name/nm0031246/) IMDb records his marriage to Lynda Costanzo on January 31, 1981, lasting until his death and producing one child.[1](https://www.imdb.com/name/nm0031246/) TV Insider lists [Annie Potts](https://www.edgepedia.org/annie-potts) as his spouse, a discrepancy between the two databases that the available records do not resolve.[3](https://www.tvinsider.com/people/greg-antonacci/) He died on September 20, 2017 in [Massapequa, New York](https://www.edgepedia.org/massapequa-new-york), at age 70; the cause was not disclosed.[1](https://www.imdb.com/name/nm0031246/)
## References
1. [Greg Antonacci, IMDb](https://www.imdb.com/name/nm0031246/)
2. [Greg Antonacci, AnnuSeries](https://www.a-suivre.org/annuseries/encyclopedie/personnalite.php?perso=60617)
3. [Greg Antonacci, TV Insider](https://www.tvinsider.com/people/greg-antonacci/)
4. [Greg Antonacci, TheTVDB](https://thetvdb.com/people/309791-greg-antonacci)
5. [Greg Antonacci, FMDb](https://fmdb.mov/en/people/1212814-greg-antonacci)
6. [Greg Antonacci List of Movies and TV Shows, TV Guide](https://www.tvguide.com/celebrities/greg-antonacci/credits/3000254958/)
7. [paleycenter.org](https://www.paleycenter.org/collection/item?item=B:13947&p=353&q=what)
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*Topic: Encyclopedia › Arts and culture › Screen and stage › Film and television › Screen people and creators › Screen actors of the Anglosphere and Europe › American actors: 1970s to 1990s › Surnames A*
*Initially written Sep 17, 2026 · Reviewed: Oct 25, 2026 · Edited: Oct 12, 2026; Oct 15, 2026; Oct 25, 2026 · Last review: Oct 25, 2026*
*Copyright 2026 EdgeChat AI, a subsidiary of Biostate AI.*
License: Edgepedia Community License 1.0, https://www.edgepedia.org/edgepedia/license