St Lucia's RIchard Peterkin has also indicated on Twitter that he intends to stand.
Joseph, general secretary of the St Vincent and the Grenadines Olympic Committee is already a senior PASO figure, currently serving as third vice-president.
His nomination letter speaks of Joseph’s “immense knowledge, experience and proven commitment and abilities”.
It continues: “Over the years as our general secretary Mr Joseph has displayed an eagerness to advance the cause of the Olympic Movement in the Americas, always advocating the principle of fair play in our decision-making.
“His leadership has facilitated immense assistance to numerous National Olympic Committees (NOCs), national federations and other sporting organisations.”
The Dominican Republic’s José Joaquín Puello has already officially declared as a candidate, and a number of others are now expected to follow.
Rio 2016 President and PASO second vice-president Carlos Nuzman is viewed as a near certainty to enter the race and is widely seen as favourite to succeed Uruguay’s Julio Maglione in the top job.
Another likely contender is Chilean Olympic Committee President Neven Ilic, mentioned by Peterkin in a Twitter post apparently revealing his own plans to stand today.
Peterkin, the St Lucian International Olympic Committee (IOC) member and chartered accountant who is treasurer of both PASO and the Association of National Olympic Committees (ANOC), revealed details of the likely field.
he wrote on Twitter: "PASO Presidential candidates - Nuzman, Ilic, Joseph, Peterkin and Puello. No women. All Continental Associations run by men. No diversity."
Neither Peterkin, Ilic nor Nuzman have formally declared their candidacy, however.
The election is due to staged at an Ordinary General Assembly later this year, and probably after the Rio 2016 Olympic and Paralympic Games.
Before that, in early May, an Extraordinary General Assembly will be held to agree and adopt a new PASO Constitution.
It recently emerged that this meeting would take place in the Brazilian capital Brasilia, almost coinciding with the start of the main Brazilian leg of the Olympic Torch Relay that will transport the Olympic flame to the Maracanã Stadium for the start of Rio 2016.