|frequentie=1x/nacht
|concessie=Hoofdrailnet (2015-2024)
|voorganger=''geen''
|opvolger={{s|400|2023}}
}}
'''Treinserie 400''' was in de [[dienstregeling 2022]] de [[Nightjet]] tussen [[Amsterdam Centraal]], [[Köln Hbf]], [[Frankfurt (M) Hbf]], [[Karlsruhe Hbf]], [[Basel SBB]] en [[Zürich HB]].