The 30-year-old has been in outstanding form for the Baggies this season – with the forward having netted four goals in his last six games.
Robson-Kanu retired from international football in August 2018 having made 44 appearances, scoring five times.
Most famously, he scored Wales' second goal in their 3-1 win over Belgium in the quarter-finals of Euro 2016.
Next year the Welsh will again be at the European Championships after they qualified for Euro 2020 last week.
And Robson-Kanu says he is happy to step in and do a job for the team if needed.
"I've been speaking to them (Wales) for a while now about making myself available if at any time they felt I could contribute," the striker said.
"It's nothing to do with qualifying or not. It's about whether they feel I can help the team.
"I decided to retire when I felt that I really needed to concentrate on my club football and I could also see there were a lot of good young players coming through.
"But also I've got a young family and I felt I wanted to spend more time with them.
"International football is a big commitment. The calendar is 70 days a year and 36 of them you are out of the country. That's a long time.
"There are so many games in the Championship too. But I feel in a better place.
"I've missed international football and you do get that feeling that you can still help the team.
"It's something I am thinking hard about, we'll see."
In the vast majority of games under Slaven Bilic, Albion have played a 4-2-3-1 formation with Robson-Kanu having shone as the lone striker.
And he believes the way the head coach wants to play is bringing the best out of him.
"I'm enjoying it and I hope I can play my part in keeping this momentum," he continued.
"There really is a sense around the place that we want to achieve something.
"The manager is really instilling that and we all want to play our role in whatever position we can.
"The way we play, you need be quite dynamic in that (lone striker) role.
"You have to be strong enough to hold up play and technically good enough to play through the lines and bring the other guys such as Matheus (Pereira), Grady (Diangana), Filip (Krovinovic), Matt (Phillips) and more.
"I made my international debut against Slav's Croatia so I was aware of the style of football he would be wanting it play.
"I've played a number of different roles and felt most comfortable up front.
"But now I am in a team which wants to play through the lines with a high tempo. In that number nine role, you have to give something to the team."