Kail replaces Chris Knight, who is moving into the role of group chief risk officer of Legal & General.
Kail joins from PricewaterhouseCoopers (PwC) where he spent 30 years in a wide variety of roles including, most recently, the head of financial services.
In his new role, Kail is expected to play a role in the group’s work to meet the climate challenge, and the social inequalities arising from our ageing society.
Nigel Wilson, chief executive of Legal & General, said: “Legal & General’s top management team is a terrific asset to the company.
“Andrew knows us well, and we have huge respect for his sector knowledge, commercial acumen and leadership skills.
“I am delighted he has chosen to join Legal & General as we focus on helping people live happier, healthier and more connected lives in retirement”.
Kail added: “I am really excited to be joining Legal & General Retail Retirement. We know that the coming years will present a challenging and increasingly complicated landscape for people approaching, and in retirement.
“I believe LGRR’s breadth of solutions and services is uniquely suited to helping customers make better decisions and in turn, get better outcomes.
“I am looking forward to leading an outstanding team of professionals who are committed to developing our business through providing our excellent service to our customers.”