Meg Ryan did not progress in the all around after finishing in 25th place in her subdivision at the Ariake Gymnastics Centre in Tokyo.
The Cork teenager scored 47.199 overall, with Russian Olympic Committee gymnast Angelina Melnikova topping the rankings with a score of 57.132.
Ryan received scores of 13.200 (vault), 11.533 (uneven bars), 10.466 (balance beam) and 12.000 for her floor routine.
The top 24 overall gymnasts advance to the final.
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"I'm feeling great. To officially be an Olympian is just amazing, it’s surreal," Ryan said afterwards.
"It’s been an amazing experience overall, just looking around and taking it all in. I knew that no matter what happens I was just going to try and enjoy it and be happy with the fact that this is the Olympics and I am an Olympian.
"Definitely a bit of nerves for me at the start, I think beam is always a shaky one to start on anyway. I got into it though, and after that I tried to put it behind me and focus on the rest and I think I did a good job with that and I was happy with the rest of the performance.
"I was really happy with floor, I added a few small bits and pieces – a few new leaps and a spin, they all went well. I had a slight step out, but I think overall I was happy with floor and I got a good floor score and when I’m comparing it with my last competition I think I was happy with the score.
"I was also happy with my vault as that is something that I didn’t get to compete at Europeans. This is my first time competing in a long time so I’m happy with that and bars as well.
"These are some of the best gymnasts in the world so it’s amazing to be able to compete against them."