Goal takes a look at all 32 challengers, with the tournament set to get under way on June 14
Getty Images=32. Panama
Qualifying route: CONCACAF Fifth Round third place
dabblebet odds to win: 1000/1
Panama will be competing at the World Cup for the first time in history after emerging as the surprise package in CONCACAF qualifying.
The Central American side managed to draw with the United States and Costa Rica in the qualification process, results which helped them secure a third-place finish.
The backbone of their squad is made up of players who are plying their trade in Major League Soccer and, while they are not likely to challenge for the title, they will be hoping they can frustrate Belgium, England and Tunisia in Group G.
AdvertisementGetty=32. Saudi Arabia
Qualifying route: AFC Third Round Group B runners up
dabblebet odds to win: 1000/1
Saudi Arabia are back in the World Cup after failing to qualify for the previous two editions and the draw has placed them in Group A alongside Uruguay, Egypt and tournament hosts Russia.
Managed by Juan Antonio Pizzi, who steered Chile to the final of the Confederations Cup, they face a difficult fight to qualify from the group and their odds reflect that.
However, if players such as Salem Al-Dawsari and Yahya Al-Shehri play to their potential, Pizzi's side could spring an upset or two.
Getty=30. Tunisia
Qualifying route: CAF Group A winners
dabblebet odds to win: 500/1
Tunisia find themselves up against it in Group G alongside Belgium, England and Panama.
The North African men breezed through qualification to book their place in Russia, but they will have to step things up a gear if they are to have a chance of progressing – something they have failed to do on four previous occasions.
Players such as Rennes midfielder Wahbi Khazri and Esperance's Anice Badri will be crucial to their efforts.
Getty Images=30. Iran
Qualifying route: AFC Third Round Group A winners
dabblebet odds to win: 500/1
In the four appearances Iran have made at previous tournaments, they have finished bottom of their group on three occasions, winning just one game out of 12, so history is not on their side.
However, they have an experienced coach at the helm in the form of Carlos Queiroz, who will attempt to make amends for a poor showing in Brazil four years ago.
While they do not necessarily boast any household names in their squad, Eredivisie stars Alireza Jahanbakhsh and Reza Ghoochannejhad, along with Rubin Kazan forward Sardar Azmoun, boast plenty of ability.