This list was made in response to this request for stories about Ianto and the Doctor, either romance or friendship. I've split the list into two parts. First are stories where Ianto is in a sexual or romantic relationship with the Doctor. Second are stories where they're friends. Both parts are tagged together on Delicious under storyfinder:iantoanddoctor, but you can separate them there by clicking on the +ianto/doctor tag for sexual/romantic relationship stories or the +ianto&doctor tag for friendship stories.
( Ianto/Doctor Stories (Sex and/or Romance) )
( Ianto&Doctor Stories (Friendship) )
( Ianto/Doctor Stories (Sex and/or Romance) )
( Ianto&Doctor Stories (Friendship) )