858 Google hits for "contact person" site:uk>
(Of the first ten hits, two are German companies, three are companies from other countries, and one is an "out of contact person", leaving three remaining good hits on that page.)
863 Google hits for "contact person" (in English) site:de >
More hits in Germany than in the UK does not suggest this is always the best translation.
So what do you say in the UK? Let's take some examples in German and find the equivalent.
Rektoratsbeauftragte und Kontaktpersonen zu ausseruniversitären Institutionen und universitätsnahen Einrichtungen >
This is above a table of names and phone numbers of people to contact about institutions linked to a distance university (foundations, societies).
A similar page at the Open University is labelled:
Contact Us
You can contact us at: >
Another page uses a noun:
UK contacts
Names are not provided. E-mail addresses are not for individuals; they start with "enquiries" - which is also a useful word in this context.
To contact staff in the Vice-Chancellor's office>
(Here, names are given.)
Or this line, above a similar table to the German one: