Australia has a low TOO for logos and flags. It might, however, be used under the CC0 license, as per https://ihra.org.au/22773/an-intersex-flag/: "The 'intersex flag' image is now formally licensed under the Creative Commons Zero 1.0 Universal license. 18 December 2013."
Legal disclaimer This image or video file contains a symbol that represents sexual and gender minorities, including lesbian, gay, bisexual and transgender.
In addition, using these symbols for the purpose of discriminating against sexual and gender minorities may be subject to punishment under anti-discrimination laws in the Netherlands, Sweden, the United Kingdom, etc. In the United Kingdom, the applicable law is the Public Order Act of 1986.
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
http://creativecommons.org/publicdomain/zero/1.0/deed.enCC0Creative Commons Zero, Public Domain Dedicationfalsefalse
Captions
The intersex pride flag. Yellow background with a purple circle in the middle.
علم ثنائيي الجنس
De intersexvlag, gele achtergrond met een paarse cirkel in het midden.