The countries have told UEFA that they would be interested in bidding to host the European Championships on a joint basis.
Turkey have also informed UEFA that they want to want host the tournament, and reports in Georgia today say the former Soviet republic is interested in a solo bid.
The Football Association of Ireland (FAI) said in a statement: "The FAI has confirmed that it will join the Scottish FA and the Welsh FA in putting forward an expression of interest to host UEFA Euro 2020.
"The expression of interest is preliminary after the principle was discussed and is being put forward by the three associations so that the opportunity can be explored in more detail.
"At this stage, no bids would be expected or required by UEFA for at least 18 months."
The Scottish FA issued a similar statement saying: "We can confirm that we have had initial discussions on the principle of a joint bid with both Wales and the Republic of Ireland and have declared our interest to UEFA in order that we can fully explore the opportunity in more detail.
"At this stage no bids are expected by UEFA in relation to Euro 2020. These will not be required for at least 18 months."
The Liverpool 2013/14 soccer jersey is available for pre-order. The Reds are eager to compete for silver next season.
Chelsea won the Europa League on Wednesday. The Blues defeated Benfica 2-1 on injury time goal from Ivanovic.
Bayern Munich are kings of Germany and hope to be crowned kings of Europe at Wembley later this month!
Ajax has released their away soccer jersey for the 2013/14 season. Get in the Gear.
One of the top soccer cleats for control the Nike CTR360 will not let you down on the field in tight spaces.
The push for more color on their cleats, adidas has added the infrared colorway to the adiZero f50 Line.
The Juventus jersey for the 2013/14 was released earlier this week. Be the first to wear the colors of the Old Lady.
The adidas Nitrocharge is the most talked about new cleat in years. It was released on May 15 and will take your pitch by storm.
Borussia Dortmund hears Wembley Calling and are headed to London for the Champions League final.
The new PUMA evoSPEED 1.2 FG. A great new soccer cleat with classic look and first time for PUMA to be on the cleat.