Which pokemon can breed with ditto?

Answer 1

Ditto can breed with almost every other Pokemon in the Daycare Center, including genderless ones. Here is a list of the Pokemon that cannot be bred:

• Legendary Pokemon (excluding Phione and Manaphy)
• Baby Pokemon (eg. Pichu)
• Unown
• Nidorina and Nidoqueen
• Ditto (itself)

Note that genderless Pokemon cannot breed with any Pokemon other than Ditto.
everyone except legendaries (excluding manaphy) + manaphy is the only Pokemon that breeds

Answer 2

All pokemon, except legendaries, well you can breed it with manaphy too but than you get phione.
You can breed any Pokemon with a gender except Arceus, Articuno, Azurill, Baltoy, Celebi, Claydoy, Cleffa, Cresselia, Darkrai, Deoxys, Electrode, Entie, Igglybuff, Heatran, Ho-Oh, Giritina, Groundon, Kyogre, Latias, Latios, Lugia, Lunatone, Mew, Mewtwo, Moltres, Pichu, Magby, Magnemite, Magnetone, Metang, Metagross, Nidoking, Nidoqueen, Raikou, Rayquaza, Regice, Regirock, Registeel, Regigigas, Shaymin, Shedinja, Smoochum, Solrock, Starmie, Staryu, Suicune, Tangela, Togepi, Unown, Voltorb, Wynaut, Zapdos, Uxie, Azelf, Mesprit, Dialga, Palkia, and Wobbuffet.