In one place:  2018 theatre seasons announced.

107 Projects Redfern
http://107.org.au/

ATYP: Australian Theatre for Young People
http://www.atyp.com.au/2018-season

Bell Shakespeare
https://www.bellshakespeare.com.au/whats-on/in-theatres/

Belvoir Theatre
https://belvoir.com.au/2018-season/

Blood Moon Theatre
https://www.facebook.com/bloodmoontheatre/

Capitol Theatre
http://www.capitoltheatre.com.au/

Carriageworks
http://carriageworks.com.au/2018-program/

Concourse Chatswood
http://theconcourse.com.au/whats-on/

Depot Theatre
http://thedepottheatre.com/2018-season

Ensemble Theatre
https://www.ensemble.com.au/show-category/2018-season/

Eternity Theatre
http://www.darlinghursttheatre.com/whats-on/2018-season

Genesian Theatre
http://www.genesiantheatre.com.au/index.php?mode=next

Glen Street Theatre
https://glenstreet.com.au/whats-on/theatre

Griffin Theatre Company
http://www.griffintheatre.com.au/whats-on/2018-main-season/

Hayes Theatre
https://hayestheatre.com.au/current-season/

The Joan, Penrith
http://thejoan.com.au/series/season-2018/

Kings Cross Theatre
http://www.kingsxtheatre.com/2018

Monkey Baa Theatre
https://www.monkeybaa.com.au/

New Theatre
https://newtheatre.org.au/#

Old 505 Theatre
https://old505theatre.com/performances.html

PACT Theatre
http://www.pact.net.au/2018-program/

Red Line Productions at Old Fitz Theatre
https://www.redlineproductions.com.au/2018-season

Riverside Theatre
https://riversideparramatta.com.au/

Seymour Centre
https://www.seymourcentre.com/group/2018-season/

Sport for Jove
http://www.sportforjove.com.au/

State Theatre
https://www.statetheatre.com.au/

Sydney Comedy Festival
http://www.sydneycomedyfest.com.au/

Sydney Festival 2018
https://www.sydneyfestival.org.au/2018/

Sydney Lyric Theatre
http://www.sydneylyric.com.au/

Sydney Theatre Company
https://www.sydneytheatre.com.au/season-2018

COMING SOON:  What’s happening in Community Theatre in 2018