Vishnu has several names over scriptures such as Sahasranamam.
Is any name of Vishnu is mentioned as Siva?
Yes, Lord Vishnu is also called Shiva in few versions of Vishnu Sahasranama. For example, Shiva appears as 27th name in Vishnu Sahasranama found in Mahabharata: Anusasana Parva:
17 सर्वः शर्वः शिवः सथाणुर भूतादिर निधिर अव्ययः संभवॊ भावनॊ भर्ता परभवः परभुर ईश्वरः
17 sarvaḥ śarvaḥ śivaḥ sthāṇur bhūtādir nidhir avyayaḥ saṃbhavo bhāvano bhartā prabhavaḥ prabhur īśvaraḥ
Wikipedia: Vishnu Sahasranama also mentions this in The Thousand Names of Lord Vishnu section:
27 शिवः shivah