powerful/op female mc. preferably isekai but a normal fantasy one is okay.

http://www.mangago.me/read-manga/reminiscence_adonis/
http://www.mangago.me/read-manga/beware_of_the_villainess/
http://www.mangago.me/read-manga/the_lady_and_the_beast/
http://www.mangago.me/read-manga/emperor_and_the_female_knight/?KiPo
http://www.mangago.me/read-manga/i_ve_become_the_villainous_emperor_of_a_novel/
http://www.mangago.me/read-manga/the_duchess_with_an_empty_soul/?3QTi
http://www.mangago.me/read-manga/may_i_ask_for_one_final_thing/
http://www.mangago.me/read-manga/crimson_karma/

If you've read those then here are some more
http://www.mangago.me/read-manga/priscilla_s_marriage_request/
http://www.mangago.me/read-manga/recording_hall/
http://www.mangago.me/read-manga/the_evil_lady_will_change/
http://www.mangago.me/read-manga/white_blood/
http://www.mangago.me/read-manga/seijo_no_maryoku_wa_bannou_desu/
http://www.mangago.me/read-manga/the_villain_discovered_my_identity/
http://www.mangago.me/read-manga/the_lady_s_law_of_survival/
http://www.mangago.me/read-manga/lady_rose_wants_to_be_a_commoner/
Some of the these that I recommended have smart mc not physically powerful
but i hope you enjoy (๑•ㅂ•)و✧

"Strong" as in literally (magic or physical) not just smart thanks

Thanks this list is nice... I've already read like half of these but I'll read those I haven't yet

http://www.mangago.me/read-manga/charlotte_has_five_disciples/?z9UA
http://www.mangago.me/read-manga/isekai_de_kuro_no_iyashi_te_tte_yobarete_imasu/
http://www.mangago.me/read-manga/sica_wolf/
http://www.mangago.me/read-manga/i_m_not_a_villainess_just_because_i_can_control_darkness_doesn_t_mean_i_m_a_bad_person/
http://www.mangago.me/read-manga/i_will_leisurely_become_a_healer_in_another_world/
http://www.mangago.me/read-manga/the_savior_s_book_caf_in_another_world/
http://www.mangago.me/read-manga/i_was_just_an_ordinary_lady/
http://www.mangago.me/read-manga/holy_guardian_tiger/
http://www.mangago.me/read-manga/i_want_to_be_a_receptionist_of_the_magic_world/
http://www.mangago.me/read-manga/the_daughter_of_the_elemental_king/
http://www.mangago.me/read-manga/the_emperor_hopes_for_the_court_lady_as_his_bride/
http://www.mangago.me/read-manga/isekai_de_mofumofu_nadenade_suru_tame_ni_ganbattemasu/
http://www.mangago.me/read-manga/villainess_level_99_i_may_be_the_hidden_boss_but_i_m_not_the_demon_lord/
http://www.mangago.me/read-manga/shindou_sefiria_no_gekokujou_program/
http://www.mangago.me/read-manga/when_i_woke_up_twenty_years_passed/
http://www.mangago.me/read-manga/this_mage_desires_mediocrity/
http://www.mangago.me/read-manga/the_earl_s_daughter_was_suddenly_employed_as_the_crown_prince_s_fianc_e/
http://www.mangago.me/read-manga/the_villainess_will_crush_her_destruction_end_through_modern_firepower/
http://www.mangago.me/read-manga/i_ll_become_a_villainess_that_will_go_down_in_history_the_more_of_a_villainess_i_become_the_more_the_prince_will_dote_on_me/
uh ok these are mostly magically strong but some are physically and magically strong, i hope there are more you haven't read in this list