SPF Beheer verzorgt pensioen- en salarisadministratie voor de volgende klanten:
| Abellio |
| ACTS Nederland BV |
| Arc Amsterdam BV |
| Arcadis Nederland BV |
| Arriva Multimodaal BV |
| ASSET Rail BV |
| Aython BV |
| BAM Rail BV |
| BAM Groep NV |
| BT Nederland NV |
| CapTrain Netherlands B.V. |
| Connexxion Openbaar Vervoer NV |
| DB Schenker Rail Nederland NV |
| DeltaRail BV |
| DHV NPC B.V. |
| Dutch Rail Control BV |
| Eiffage Rail B.V. |
| EMSI Ltd. |
| ERS Railways BV |
| Eurail Group GIE |
| Eurailscout Inspection & Analysis BV |
| Fahrleitungsbau GmbH |
| Grondbank Nederland BV |
| Group 4 Securicor Safe Express BV |
| HSA Beheer NV |
| Human Company BV |
| Husa Transportation Group BV |
| Intergo BV |
| Inter Modal Solutions BV |
| Keyrail BV |
| Landelijke Spoorweg Reisvereniging |
| Lloyds Register Rail Europe BV |
| Logitech BV |
| Mobiliteitscontactcenter BV |
| Movares Nederland BV |
| Mowlem Railways Nederland BV |
| NedTrain BV |
| NedTrain Ematech BV |
| NS Groep NV |
| NS Financial Services Company |
| NS Internationaal BV |
| NS Opleidingen BV |
| NS Personeeladministratie BV |
| NS Reizigers BV |
| NS Stations BV |
| NS Travel Group BV |
| NS Werk BV |
| NV Nederlandse Spoorwegen |
| ProRail BV |
| Rail Factory BV, The |
| Rail Service Center Rotterdam BV |
| Reisinformatiegroep BV |
| Rotterdam Rail Feeding BV |
| Servex Administratie BV |
| SPF Beheer BV |
| Spoorflex Safety First BV |
| Stichting Bodemsanering NS |
| Stichting Nederlands Spoorwegmuseum |
| Stichting Railinfra Opleidingen |
| Stichting Railsport Nederland |
| Strukton Rail BV |
| Strukton Systems BV |
| SVO-rail vof |
| Syntus BV |
| Thalys Nederland NV |
| Tribase Datasystems & Network Services vof |
| Veolia Transport Rail BV |
| Vereniging van Hoger Spoorwegpersoneel |
| voestalpine Railpro BV |
| voestalpine WBN BV |
| Volker Stevin Systems BV |
| VolkerRail Nederland BV |