Máire Ní Cheallaigh is an Irish teacher who has spent years teaching the language. She first taught in a school in the northside of Dublin and then moved to the Institute of Education in the city centre. She has a particular interest in debates and spent more than 20 years preparing students to participate in Gael Linn debates. 
Is múinteoir Gaeilge í Máire Ní Cheallaigh a bhfuil na blianta caite aici ag múineadh na teanga. Mhúin sí i scoil i dtuaisceart Bhaile Atha Cliath ar dtús agus ansin d’athraigh sí go hInstitiúd an Oideachais i lár na cathrach. Tá suim ar leith aici sna díospóireachtaí agus chaith sí breis is fiche bliain ag ullmhú daltaí chun páirt a ghlacadh i ndíospóireachtaí Ghael Linn.