Yes, <p>Yes, same-sex marriage is allowed in Tibia! I've done it myself plenty of times.
"You times.</p><blockquote><p>You cannot be married if you are already married, but you may marry a character of the same sex."
Taken sex.</p></blockquote><p>Taken directly from the FAQ on Marriage: https://www.tibia.com/support/?subtopic=gethelp&entryid=79https://www.tibia.com/support/?subtopic=gethelp&entryid=79</p>