# Regexp query case-insensitive flag
**URL:** https://discuss.elastic.co/t/regexp-query-case-insensitive-flag/16216
**Category:** Elasticsearch
**Created:** [March 7, 2014, 2:32am UTC](https://discuss.elastic.co/t/regexp-query-case-insensitive-flag/16216 "2014-03-07T02:32:29Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Guoxing\_Li](https://discuss.elastic.co/u/Guoxing_Li)
#### Post date: [March 7, 2014, 2:32am UTC](https://discuss.elastic.co/t/regexp-query-case-insensitive-flag/16216/1 "2014-03-07T02:32:29Z")
Hi there! I have a question regarding regexp query. Is there any way to
enable case-insensitive flag when doing regexp query? I didn't find any way
to specify that. Also, not in regex filter, or the regex functionality in
query string query. However, it is available in Terms facet regex patterns.
Is that not available or just I didn't find it?
Thank you in advance,
Guoxing
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### Author:  [@Binh\_Ly\_2](https://discuss.elastic.co/u/Binh_Ly_2)
#### Post date: [March 7, 2014, 1:14pm UTC](https://discuss.elastic.co/t/regexp-query-case-insensitive-flag/16216/2 "2014-03-07T13:14:31Z")
Unfortunately, I don't believe this is available at the moment.
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 1:44am UTC](https://discuss.elastic.co/t/regexp-query-case-insensitive-flag/16216/3 "2017-07-06T01:44:59Z")