What is the etiquette for the mother of the groom at a wedding?

Short answer

The mother of the groom is a guest of honour. She helps get ready, greets guests, and joins the receiving line if there is one. She does not host unless the couple asks, and she follows the couple's wishes.

Traditionally, the mother of the groom has a supporting role. She is not the host, the couple and their parents usually are. Her main jobs are to be present, warm, and helpful. She may help the groom get ready, especially if he is getting dressed at home, and she can greet guests as they arrive.

If there is a receiving line, she stands with the couple and both sets of parents. She should not make speeches unless the couple asks her to. If she wants to say a few words, she should check with the couple first and keep it brief. She can help with small tasks like pinning buttonholes or checking that older relatives are comfortable, but she should not take over planning or decisions.

The key etiquette rule is to follow the couple's wishes. They may have a modern arrangement where she is more involved, or they may want a quieter role for her. She should ask what they need and offer support without pushing. On the day, she should enjoy herself, dance, and be part of the celebration. If she has concerns about seating or outfits, she should raise them before the wedding, not on the day.