Question: Who is the longest serving manager in premier league?
Disambiguated questions and answers: question: Who is currently the longest-serving manager in their present appointment in Premier League?
Who had the all-time longest service as manager in Premier League?
Who managed the most games in Premier League history?
answer: Gareth Ainsworth
Arsène Wenger
Arsène Wenger
Natural Questions answer: Arsène Wenger (from the Wikipedia article "List of current Premier League and English Football League managers")