It follows ironic cheers aimed at Ian Keatley as he was subbed off at the weekend
Munster have urged their fans to show respect for both teams, officials and stadium staff during matches.
In the wake of Saturday's loss to the Leicester Tigers, Munster head coach Anthony Foley expressed disappointment with a section of the home support, who cheered ironically when under-performing out-half Ian Keatley was subbed-off.
The province have now followed-up Foley's post-match comments by reminding fans to show respect, help to educate and welcome younger supporters and to call-out any unsporting behaviour that they witness in the stands.
In a statement on their website, the province set out what they are calling for:
R - Respect for both teams, officials and stadium staff. Please remember it is a family occasion, we encourage a vocal crowd and sporting behaviour.
E - Enjoy the game. We want everyone attending Irish Independent Park and Thomond Park to enjoy the experience and feel safe.
S - Silence for the kicker. We encourage our fans and opposition supporters to uphold the tradition of remaining silent for all kickers when taking shots at goal.
P - Participate in the overall match-day experience. Please be vocal in your support, wear your team colours and continue to be upstanding in showing your support on match-day.
E - Educate and welcome younger supporters. It is a family occasion and we want our younger supporters to enjoy memorable moments and become life-long members of the club, show them how to support rugby positively, leading by example.
C - Call out those around you who display unsporting behaviour. We have stewards positioned around the stadium in the terraces and stands, and we ask that you consult them for any issues that may arise.
T - Traditions to be recognised. Please continue to uphold our traditions and values as a club.
Former Munster forward Trevor Hogan last night told Off The Ball that the behaviour of those fans last Saturday had been pathetic, saying: "If you're a supporter, that is a line you do not cross. No matter what sport. Not even the lowest of the low - I don't want to even insult soccer by saying that they would do that.
"The only thing that's lower is racism or sexual harassment. That is pathetic.
"Munster fans are the most passionate and knowledgeable fans around so that's why it's even more disappointing to hear that.
"It's the opposite of support."