Canberra United has warned fans they face being banned from W-League matches if they misbehave after a "number of incidents" were reported last week.
United officials decided to email the club's membership base this week to remind them of their responsibilities in the stands and potential penalties for breaching the spectator code.
It's understood a Canberra fan verbally attacked a Brisbane player at McKellar Park last week in a manner the club deemed inappropriate.
Canberra boss Phil Brown decided to move quickly in a bid to deter similar problems in the future, especially given United boasts the highest membership numbers of any team in the competition.
The spectator involved in the post-game incident with the Roar player has not been identified or penalised yet.
"Someone who was at the same spoke to a [Brisbane] player in a manner that doesn't reflect our club or the values we hold, and certainly not in a manner you would suggest promotes women's football," Brown said.
"We just wanted to make sure that whenever people are at our games and supporting us, which we thank them for, that they're also supporting women's football generally.
"We want there to be mutual respect on the field between players and referees and the spectators and the players.
We're all there because we love football, but at the same time we need to be supportive of the other players. We need to respect their position in the game."
MORE CANBERRA SPORT
The email to members said fans had used obscene and offensive language towards players on the field.
"Please remember spectators attending a match ... staged or sanctioned by the FFA ... must follow the FFA spectator code of conduct," the email said.
"Significant penalties apply for breaching the condition of entry, including being evicted from the venue and potentially banned from attending future matches."
Canberra has attracted more than 1000 fans to each of its three home games so far this season.
Canberra's women's sporting teams are being forced to crackdown on fan behaviour as popularity of the W-League and WNBL continues to grow.
It was revealed this week security guards at Canberra Capitals games have removed people from the venue after being identified as "courtsiders".
"There's been the discussion in all sport about being vigilant about that activity," Brown said.
"We get support from the FFA and service providers to monitor betting agencies to identify any matches at risk and I'm happy to say there's been no indication of any at-risk football matches in my time here."
Canberra has won two of its four games so far this year and will play the Perth Glory in round five on Friday night. The teams have already met this season, with Canberra scoring a 2-0 win against the Glory in round one.
W-LEAGUE ROUND FIVE
Friday: Perth Glory v Canberra United at Perth, 10.15pm.