The London-based firm said Gilbert had been a long-standing supporter of the business since it was founded in 2015 and “understands our partnership approach with clients”.
Gilbert was a co-founder and then chief executive of Aberdeen Asset Management which eventually merged with Standard Life in 2017.
He is currently chairman of digital bank Revolut and senior independent non-executive director at Glencore, as well as chairman of Toscafund. In June, Gilbert was named as the chairman of the Oil & Gas Technology Centre (OGTC).
Tanvi Davda, managing partner at Saranac Partners, said: “We are delighted to welcome Martin to the board. He offers unrivalled credentials in this sector and will bring outstanding insight to Saranac Partners, as well as an unparalleled network of contacts. His experience will be invaluable to the growth of Saranac Partners.”