Gidan jirgin ruwa gini ne ko matsuguni da aka kera musamman don adanawa, kariya, da kula da jiragen ruwa da sauran jiragen ruwa. Yawanci yana samun damar shiga ruwa, kamar tashar jirgin ruwa ko tudu, yana ba da damar kwale-kwale a iya harbawa cikin sauƙi da kuma dawo da su. Ana iya amfani da gidajen jiragen ruwa don dalilai daban-daban, kamar wasan kwale-kwale na nishaɗi, kamun kifi, ko a matsayin tushe na ayyukan wasanni na ruwa. Ana iya samun su a kan tafkuna, koguna, da sauran ruwayen da ake yawan kwale-kwale.