Updated Feb 20, 2026
Details
Known For
Actor
Occupations
Voice actor, Television actor, Film actor, Actor
Birthday
(Sunday)
Nationality
Citizenship
United States
Languages
English
Spouse
Alan Rosenberg (1989-2010)
Education
Northwestern University School of Communication, Northwestern University, University of Nebraska at Kearney
Zodiac Sign
♏ Scorpio
Chinese Zodiac
狗 Dog
Popularity
Tier B -- 37,549 Wikipedia views/month
DROPTHE_ GOSSIP
Maggie Gyllenhaal →
Screen debut
First screen credit at age 29
Career
Career spanning 33 years (1988-2021)
Zodiac
Born in the Year of the Dog
DROPTHE GOOD_
12
Notable
out of 100
Most people on Earth score 0. Only those with measurable positive impact appear on this scale.
Human Impact
0
Innovation
0
Giving
0
Sustainability
82
Cultural Uplift
40
Public Vote
★
★
★
★
★
Be the first to vote
Filmography (23)
AWARDS (4)
G
Primetime Emmy Award for Outstanding Supporting Actress in a Drama Series
1990
WON
G
Primetime Emmy Award for Outstanding Supporting Actress in a Drama Series
1990
WON
B
star on Hollywood Walk of Fame
WON
G
Primetime Emmy Awards
WON
Biography
Mary Marg Helgenberger (born November 16, 1958) is an American actress. She began her career in the early 1980s and first came to attention for playing the role of Siobhan Ryan on the daytime soap opera Ryan's Hope from 1982 to 1986. She is best known for her role as Catherine Willows in the CBS police procedural drama CSI: Crime Scene Investigation (2000–13) and the subsequent TV movie Immortality (2015). She reprised the role in the sequel CSI: Vegas (2022–present). Helgenberger is also known for playing the role of K.C. Koloski in the ABC drama China Beach (1988–91), which earned her the 1990 Emmy Award for Outstanding Supporting Actress in a Drama Series. She is also known for roles in the TV series Under the Dome and Intelligence, and the films Species (1995), Species II (1998), Erin Brockovich (2000), and Mr. Brooks (2007).
Connections (2)
Related People
Frequently Asked Questions
How old is Marg Helgenberger?
Marg Helgenberger is 67 years old, born on .
Where was Marg Helgenberger born?
Marg Helgenberger was born in Fremont, Nebraska, USA.
What movies or shows has Marg Helgenberger been in?
Marg Helgenberger has 23 credits in our database. Notable titles include CSI: Vegas (2021), This Changes Everything (2019), All Rise (2019), Almost Friends (2017), CSI: Immortality (2015).
What is Marg Helgenberger known for?
Marg Helgenberger is primarily known as an actor. Mary Marg Helgenberger (born November 16, 1958) is an American actress. She began her career in the early 1980s and first came to attention for…
Where can I find more information about Marg Helgenberger?
You can find more about Marg Helgenberger on IMDB, TMDB, Wikidata. Their full profile and filmography is available on this page.
