New toilets at the University of Northampton have the usual plate on the door saying who can enter the loo but it shows the figures of a man, a woman and a half-man, half-woman.
In the silhouette, the figure has a trouser-wearing leg on one side while the other side sports a skirt.
According to the university, the gender-neutral toilets are in response to a demand from the students, The 'Daily Express' reported.
"There is a growing population of trans students, with those who identify as transgender, non-binary or are inter-sex," Victor Agboola, from the students' union at the university, said.
The move was designed so "there will be no situation in which two people of any gender identity will be in the same room, ensuring they can feel comfortable using the space," the university said.
The LGBTQ Society and "members of the student population" were consulted about the move, it added.