4000 series (disambiguation)

4000 series may refer to:

Integrated electronic circuits

• The 4000 series family of industry standard integrated circuits

Japanese train types

• Meitetsu 4000 series EMU
• Odakyu 4000 series EMU
• Seibu 4000 series EMU, operated by Seibu Railway
• Tokyu 4000 series, an informal classification for the Tokyu 5050-4000 series EMU

Korean train types

• Seoul Metro 4000 series