On stage Claudia Black has played several characters with different ensembles. She acted in "Spotlight On Women", "Loose Ends", Oscar Wilde's "Portrait Of Dorian Gray" and "Pick Ups" at the Belvoir Street Theatre, one of the most prestigious theatre companies in Sydney where other famous actors as Geoffrey Rush and Cate Blanchett were on stage. Other important appearances on stage were as Jo March in "Little Women" and in "The Worlds Knot" at the Bicentennial Opera. On a European tour she portrayed Portia in Shakespeare's "Merchant Of Venice" and made a great impression on critics. In 1990 she was finalist of the Globe Shakespeare Competition.

In Australia and in New Zealand Claudia Black became famous by acting in several TV productions. She played a main character in "City Life" (1996) and a supporting character in "A Country Practice".
"City Life" was produced in New Zealand and often called the suspenseful "Melrose Place" from down under. It was cancelled after the first season because of moderate ratings. But especially in Europe "City Life" was successful and received awards for Best Drama Series and Best Actor of the New Zealand Film & Television Academy for Oliver Driver (Josh) in 1997. Claudia Black portrayed Angela Kostapas, a talented Greek lawyer.
In "A Country Practice" Claudia Black played a nurse called Claire Bonacci from 1055 episode to 1058 and in the following ones from 1993 to 1994, after the producer of the Show was changed to another person.

She had guest appearances in the TV series "G.P." (1988), "Police Rescue" (3.12 episode, "Double Illusion" as Julia, 1993), "Seven Deadly Sins" (Mini-series, 1993), "Good Guys Bad Guys" (2.5 episode "Naughty Bits" as Jill Mayhew, 1997), "Water Rats" (2.21 episode, "All At Sea" as Beth Williams, 1997), "A Twist In The Tale" ("Obsession In August" episode as Morgana, 1999), a show about children tales narrated by William Shatner, and the well-known "Beastmaster" (2.13 episode, "Wild Child" as Huna, 2000) made her more famous. In "Hercules" (3.22 "Atlantis" and 4.10 "Hercules On Trial" episodes in 1997 and 1998) Claudia Black played Cassandra, and in "Xena - Warrior Princess" (5.16 episode, "Lifeblood", 2000) she played an Amazon warrior. A spin-off about the Amazons was planned and Claudia Black would have continued the part of Cassandra but the series was never produced. Scenes of the never aired pilot called "Amazon High" were put into "Lifeblood" episode.

Then the TV show where Claudia Black was sent into the stars came. After that she would be considered as one of the greatest Sci-Fi actresses on TV playing Aeryn Sun on "Farscape" (1999). It was created by the genius Rockne S. O'Bannon and produced by Brian Henson (Jim Henson's son. Jim was the creator of Dark Crystal, Labyrinth and Fraggle Rock. His son is the owner of one of the best animatronics companies in the world). Aeryn Sun is an expert strong warrior Peacekeeper woman, she has skills to pilot ships but she is repudiated by her own people, she is wanted by "the bad guys" for being involved in an accident with a few alien prisoners and a human called John Crichton. Aeryn Sun has been one of her best characters until now without a doubt. She has been nominated for this role at Saturn Awards between 2000 and 2003 and in 2005 she won Best TV Actress award for her performance in Peacekeeper Wars mini-series. She also has won a few awards around the world like "2000 scifi ing" and "TV Zone Magazine", the "Roswell Award" by popular election between 2001 and 2002 for Best TV Actress.
In 2001 Claudia did a voice over for one of NGC documentaries, "National Geographic's Mission: Earth".